H. Diamond / Hayashi Diamond

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H. Diamond / Hayashi Diamond
(Published: Aug. 27, 2016, Update, Nov. ’16)


“H. Diamond” or “Hayashi Diamond”

“H. Diamond” was established in Arakawa-Ku, Tokyo
It was the factory of “Hayashi Ichitaro”, a famous blacksmith 

Update, Nov. ’16:  Hayashi Ichitarō = 林 市太郎

There are different symbols/trademarks of “H. Diamond”, which probably evolved
in time, I do think that the numbers aren’t related with a time frame though

Here are the different kinds I’ve found so far:

Numbered ones:

  • 30 H. Diamond Extra Steel, Best hollow ground, For Barbers’ Use
    First Quality, “H. Diamond” Real Japanese hollow ground, “W-2”H. Diamond 30 1a H. Diamond 30 1b
    H. Diamond 30 1c H. Diamond 30 1a1
  • 35 H. Diamond Extra Steel, Best hollow ground
    H. Diamond 35 1b
  • 40 H. Diamond Extra Steel, Best hollow ground, For Barbers’ Use
    First Quality, “H. Diamond” Real Japanese hollow ground, “W-2”
    H. Diamond 40 2a H. Diamond 40 2b
    H. Diamond 40 2c H. Diamond 40 1c
  • 50 H. Diamond Extra Steel, Best hollow ground
    H. Diamond 50 1b H. Diamond 50 1c
  • 72 Extra SUPER-DIA Ice Temper
    H. Diamond 72 1a1H. Diamond 72 1a2H. Diamond 72 1a3 H. Diamond 72 1a5 H. Diamond 72 1a5 kopie.png H. Diamond 72 1a4
  • 74 H. Diamond Extra Steel, Best hollow ground, For Barbers’ Use 
    First Quality, “H. Diamond’s” Real Japanese hollow ground
    H. Diamond 74 2a H. Diamond 74 2bH. Diamond 74 2c
  • 74 Black Diamond, Molybden Steel, Best hollow ground, For Barbers’ Use 
    First Quality, Black Diamond, Most Reliable Razor
    H. Diamond 74 1a H. Diamond 74 1bH. Diamond 74 1d 2 H. Diamond 74 1e 2
  • 77 Hayashi Tokyo, Extra Best
    H. Diamond 77 1b H. Diamond 77 1c
    H. Diamond 77 2a H. Diamond 77 2b 
  • 80 H. Diamond Extra Steel, Best hollow ground,
    For Barbers’ Use, First Quality
    H. Diamond 80 1b H. Diamond 80 1c
    H. Diamond 80 1b kopie H. Diamond 80 1a1
  • 120 H. Diamond Extra Steel, Best hollow ground,
    For Barbers’ Use, First Quality
    H.Diamond 120 1a H.Diamond 120 1a kopie
    H.Diamond 120 1b H.Diamond 120 1c
  • 355 Hayashi, (Extra) Best Steel (Razor), Silver Razor Hayashi Marten Sidi, Made
    in Tokyo, Best Horo Ground No. (One of the arms of the mark points downwards)
    H. Diamond 355 1e 2
    H. Diamond 355 1a1 H. Diamond 355 1d 2H. Diamond 355 1b 2 H. Diamond 355 1c 2
    H. Diamond 355 2c H. Diamond 355 2dH. Diamond 355 2b1
    Update, Nov. ’16: Hayashi (ハヤシ or 林 from Hayashi Ichitarō = 林 市太郎)
    Marten Sidi” could very well mean: マルテンサイト
    or “Marutensaito” or “Martensite
     (which is a hard and very brittle
    solid solution of carbon in iron that is the main constituent of hardened steel)

    Hayashi razor box (Best…), with the same trademark:
    H. Diamond Hayashi 1a

  • 884 H. Diamond Extra Steel, Best hollow ground, 
    “H. Diamond’s” Real Japanese hollow ground
    H. Diamond 884 1b H. Diamond 884 1c
    H. Diamond 884 1a1
  • 888 H. Diamond Extra Steel, Best hollow ground, For Barbers’ Use, First Quality
    H. Diamond 888 1a
    H. Diamond 888 2a H. Diamond 888 2b H. Diamond 888 3
  • 900 H. Diamond Extra Steel, Best hollow ground, Produced By Virgin Steel,
    “H. Diamond” Real Japanese hollow ground, W-2
    H. Diamond 900 1a3
    H. Diamond 900 1a1 H. Diamond 900 1a2 H. Diamond 900 1b 2
  • 1000 H. Diamond Extra Steel, Best hollow ground
    H. Diamond 1000 1a H. Diamond 1000 1b
  • 1072 DIA MON D (S.B. Fenix steel, Tokyo Japan Hayashi & Co.)
    H. Diamond 1072 Dia Mon D 1dH. Diamond 1072 Dia Mon D 1b H. Diamond 1072 Dia Mon D 1c
  • 1074 Hayashi Tokyo, Extra Best, Silver Razor Hayashi Marten Sidi, Made in Tokyo, Best Horo Ground No. (One of the arms of the mark points downwards)
    a) Mark on front tang, nothing on back tang
    H. Diamond 1074 2a H. Diamond 1074 2a kopie H. Diamond 1074 2b
    b) Mark on back tang
    H. Diamond 1074 1b 2 H. Diamond 1074 1c 2
    H. Diamond 1074 3b H. Diamond 1074 3cH. Diamond 1074 1a1 2
    (Notice the “HORO”, meaning “Hollow”, a typical spelling mistake,
    seen frequently on Japanese razors, probably on purpose)
  • 1174 Hayashi Tokyo, Extra Best (One of the arms of the mark points downwards)
    H. Diamond 1174 1a H. Diamond 1174 1a kopie
  • 1300 H. Diamond Extra Steel, Best hollow ground, For Barbers’ Use, First Quality
    H. Diamond 1300 2a H. Diamond 1300 2bH. Diamond 1300 1a H. Diamond 1300 1b H. Diamond 1300 1a kopie
  • 5072 DIA MON D, “H. Diamond” Real Japanese hollow ground
    SONY DSC SONY DSC
  • 8000 DIA MON D, Trademark Diamond Hayashi, Best Hollow Ground,
    made in Tokyo, Extra Steel, “H. Diamond” Real Japanese hollow ground
    H. Diamond 8000 1b
    H. Diamond 8000 1d
    H. Diamond 8000 1c H. Diamond 8000 1b1
  • 8074 H. Diamond Extra Steel, Best hollow ground, For Barbers’ Use, First Quality
    H. Diamond 8074 1a H. Diamond 8074 1b
    H. Diamond 8074 1a kopie



    Not numbered H. Diamond’s, or
    razors without the name H.Diamond, but with the trademark of “H. Diamond”:

  • Trademark Diamond Hayashi Best hollow ground, “KRG
    (Also see R. saitō – KRG – Ribbon Co. ), Made in Tokyo, Extra Steel

    H. Diamond KRG 1a
  • H. Diamond, DIA MOND, Special Process, Schoeller Bleckmann,
    High Class Steel, Super Extra Razors, Hayashi &, Co. (Nothing on tang)
    H. Diamond 3a2H. Diamond 3b 2

     H. Diamond 2d H. Diamond 2b
    SONY DSC H. Diamond 3a1
    SONY DSC SONY DSC
    7074 Hana Tonbo, Silver Steel, Best Horo Ground,
    “W-2” 
    & the trademark of “H. Diamond”,
    “T’Hana Tombow’H” Real Japanese hollow ground
    H. Diamond 7074 HANATONBO 1b2H. Diamond 7074 HANATONBO 1c 2H. Diamond 7074 HANATONBO 1e 2
    Some also have “produced by Virgin Steel” on the tail:
    H. Diamond 7074 HANATONBO 2e kopieH. Diamond 7074 HANATONBO 2f kopie OLYMPUS DIGITAL CAMERA


    Brand: “Tōwa”

    “Tōwa”, sometimes “Tōwa & Co.” is frequently associated with
    the company “Gen Takahashi, H.Diamond&Co”. Masters that made
    “Tōwa” razors for the company “Gen Takahashi, H.Diamond&Co”
    were: “Hayashi Ichitaro” / “Gen Takahashi” / “H.Shinyichi”

    There are also “Tōwa” razors without a reference of one these masters…

    For now, it isn’t clear if the brand “Tōwa” originated from “H.Diamond”,
    “Gen Takahashi”, or someone else, or if the brand “Tōwa” was used by different company’s, or the other way around, that these masters worked for “Tōwa & Co.”

    Since there are also “Tōwa” razors without a reference of one these masters,
    and different boxes show different trademarks, maybe “Tōwa & Co.”was a
    company that distributed different razors of different makers, or maybe they
    took over “H. Diamond & Co.”, all is not clear at his moment…

    Also see → Tōwa, Tōwa & Co.

  • 30, Best Hollow Ground, Tōwa, Extra Tungsten Steel, I.H. Shinyichi made,
    “Gen Takahashi, H. Diamond&Co”
    H. Diamond TOWA 30 1a1
    H. Diamond TOWA 30 1a2 H. Diamond TOWA 30 1a3
  • 45, Best Hollow Ground, Tōwa, Extra Tungsten Steel, I.H. Shinyichi made,
    “Gen Takahashi, H. Diamond&Co”, “G’ Tōwa’ T” Real Japanese hollow ground
    (“G’ Tōwa’ T” being “Gen Takahashi” Tōwa ?)
    Exif_JPEG_PICTURE Exif_JPEG_PICTUREExif_JPEG_PICTURE Exif_JPEG_PICTURE
  • 1074, Best Hollow Ground, Tōwa, Extra Tungsten Steel, I.H. Shinyichi made,
    “Gen Takahashi, H. Diamond&Co”, Tōwa Extra Hollow Ground,
    First Quality T.H.G., “G’ Tōwa’ T” Real Japanese hollow ground
    H. Diamond Towa 1b
    H. Diamond Towa 1c H. Diamond Towa 1a 3
    H. Diamond Towa 2b
  • 2074, Best Hollow Ground, Tōwa, Extra Tungsten Steel, H. Shinyichi made,
    Gen Takahashi, H. Diamond&Co, Tōwa Extra Hollow Ground, First Quality T.H.G.,
    “G’ Tōwa’ T” Real Japanese hollow ground
    H. Diamond Towa 2c
    H. Diamond Towa 2d H. Diamond Towa 2a 3

    Exif_JPEG_PICTURE Exif_JPEG_PICTURE Exif_JPEG_PICTUREExif_JPEG_PICTURE
  • 4074, Best Hollow Ground, Tōwa, Extra Tungsten Steel, H. Shinyichi made,
    Gen Takahashi, H. Diamond&Co, Tōwa Extra Hollow Ground, First Quality T.H.G.,
    “G’ Tōwa’ T” Real Japanese hollow ground
    H. Diamond Towa 4074 1b1H. Diamond Towa 4074 1c 2H. Diamond Towa 4074 1b3 H. Diamond Towa 4074 1b2
  • 6074, Extra TOWA Best, “G’ Tōwa’ T” Real Japanese hollow ground
    H. Diamond Towa 6074 1b H. Diamond Towa 6074 1c
  • 9074, Best Hollow Ground, Tōwa, Extra Tungsten Steel, 
    Gen Takahashi, H. Diamond&Co, Tōwa, razor No.77 3/4,
    Trademark Tokyo Japan, Tōwa & Co.
    H. Diamond Towa 9074 1a1H. Diamond Towa 9074 1b H. Diamond Towa 9074 1c H. Diamond Towa 9074 1a2
    Or, with slightly different box:
    H. Diamond Towa 9074 1a1 andere doos H. Diamond Towa 9074 1a1 andere doos kopie
    9074, Best Hollow Ground, Tōwa, Extra Tungsten Steel,  I.H. Shinyichi made
    Gen Takahashi, H. Diamond&Co,  Tōwa Extra Hollow Ground, First Quality T.H.G.
    H. Diamond Towa 9074 2a1H. Diamond Towa 9074 2b kopieH. Diamond Towa 9074 2c H. Diamond Towa 9074 2a2



    “Gen Takahashi” Tōwa, without “H. Diamond&Co”:

  • 5064 Takagen, Super extra, atomic steel, Gen Takahashi Made,
    Gen Takahashi Tōwa YōKō Made
    Takagen 5064 Gen Takahashi 1dTakagen 5064 Gen Takahashi 1e
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