OK, here goes Round 4.
As promised at the end of Round 3, I didn’t pick an unknown design that I didn’t have a name for… that wouldn’t be fun! I focused on the most distinctive part, the knock. The top of the clip is also visible. Start your guesses now…
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Looks like a Pentel clip, but I don’t know anything about the knock.
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Well, it’s not a Pentel clip. And that is also a clue.
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They may have purchased the clips from a common source.
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Looks like a cane-sword to me. I wouldn’t know the brand 
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I think its a monami 3003 the South korean make. I can see I was already beaten to the answer above
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I’m gonna guess MonAmi MP-4003…
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Partial correct. I know the metal on mine has a slight tint but it is definitely ‘silver’, not ‘gold’.
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correct! @amjacobs7 actually guessed ‘Monami’ first in a DM to me, but locked in his model as the ‘5003’.
The ‘M’ shaped clip is a ‘Pentel’ red herring. Some Korean companies used a similarly stamped part over the years for their variously named ‘Jedo’ models.
So congrats @Ok-Satisfaction3135 for getting the make and model. Over to you for Round 5!
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