Does anyone know the name of this model? Hasn’t seemed to go for much. I’d really like to pick one up in the near future.
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It’s pre h1005
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I wonder if there are any catalog images with this in there. Does it share the same model number as the H-1005?
Not seen in existing catalog scans (77-88), so likely to be early to mid 70s OR early 1980s.
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Also was not in the 1995 catalog we have posted here
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This is one of 3 Pilot all-stainless-steel double-knocks. The H-100X, H-200X, H-210X, and H-300X are all infamous for their plastic barrel threads; in contrast, these stainless steel double-knocks have stainless steel threads on the barrel and thus do not need to be disassembled for storage.
I never actually considered that these might pre-date the “vanishing point” series of double-knocks, but I suppose that’s in the cards given the differences in construction.
For what it’s worth, I love these all-stainless-steel pieces and consider them to be among the finest double-knocks ever made.
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kinda feel like I need to get one of those now… 
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You… don’t have one??
Awwwwkkkkkkwardddddddddd 
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Are there any reported instances you know of the H-100X~H-300X actually breaking/degrading in storage due to the plastic-on-metal threading?
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I didn’t save it but there were ‘disaster’ posts on X from Japanese collectors who showed their self-destructed Pilot holders. Usually followed by photos of their remainder collection stored with everything unscrewed.
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Ugh, time to unscrew a bunch of pencils
I’ve read conflicting advice on this. I think Cytherian (don’t quote me) said somewhere on this forum that the constant fiddling of screwing and unscrewing is the reason why these problems occur, not so much the pressure that they’re under when stored assembled.
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I agree from a mechanical point of view the wear comes from unscrew/rescrewing, but for long-term storage probably better safe than sorry
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I guess I gotta get two of each now. /s but not really
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Hello, I’m a student from Japan.
I should mention that I am writing this with the help of ChatGPT, as English is not my native language.
To start with my conclusion, I am confident that this mechanical pencil is known in Japanese as the “Young Double Knock,” and that its model number is HW-100BK.
I had the opportunity to look through Pilot’s 1977 catalog, where I found a parts price list. That list includes many mechanical pencils that had already been discontinued prior to 1977. When I noticed this particular model number, I saw that the rightmost column specifies the barrel material, which made it relatively easy to infer which model it referred to.
The upper entry reads:
「精アルミ黒染め、ダブルノック式」,
which corresponds to “Precision aluminum, black-finished, double-knock mechanism.”
which corresponds to “Precision aluminum with a hairline finish, double-knock mechanism.”
The lower entry reads:
「精アルミヘアーライン仕上げ、ダブルノック式」,
Additionally, the HW-100SK double-knock is most likely referring to this same model as well.
I hope this information is helpful, and I appreciate all the insights shared in this discussion.
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@seven
Welcome!
Thank you for that thorough response!
Maybe we will get to see more of you and your knowledge.
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Wow! Amazing response. What I find interesting is that this model came not only in black, but also this blue version with the diagonal lines running up and around the barrel. I wonder if there are any other colors undiscovered out there.
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This Young double knock looks a lot like the “short” Colleen double knock (examples here), could there be a common origin?
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There is a current listing for one of these on YAJ:
https://buyee.jp/item/jdirectitems/auction/n1215086356?conversionType=buyee_top_recommend_list
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Yeah, I’ve been watching that one. Unfortunately I don’t need all the H-1003s, even if I could flip them. I suspect that listing will go even higher in price before it closes out.
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