Unknown Pilot drafting pencil

I have an old Pilot drafting pencil with an unusual barrel shape.

The barrel is round but between the grip and the clip it has three flattened sides. – I have lifted the sticker carefully but there is no model designation.

Does anyone know more?

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It’s HO-50RK-03 in 1977 catalogue.

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Thank you! :smile:

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I think this is the second iteration of one of Pilot’s oldest drafting pencils. The older version has a different tip with a few grooves near where it attaches to the grip.

My favorite thing about these old pieces is the metal flange at the end cap—it just finishes the pencil in a simple, handsome way.

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Thank you for these additional details! Yes, the metal flange is very appealing. I like that pencil!

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By the way, the clip and the metal flange remind me of the H-100x.

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Wow, never saw these before, it’s super pretty, now I NEED IT.

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