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Mystery Duofold Cap Size


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#1 sanesan

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Posted 11 October 2018 - 19:58

Hi there, I bought this parker duofold cap recently, but the problem is it seems to be larger than a duofold junior cap but slightly smaller than a duofold senior cap. It won't thread onto a duofold jr. and is very tight against the 5 or so duofold senior barrels I've tried. If it helps, my duofold jr's cap diameter measures 11.8mm, while my duofold senior is about 13.4mm, and this mystery cap is 12.8mm. 

 

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Left to right - duofold sr., mystery cap, duofold jr.

 

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 Left to right - 3 duofold sr., mystery cap



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#2 Charles Rice

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Posted 11 October 2018 - 20:13

OK, I'm on my second Martini, but isn't the cap on the right from a Senior Delux?  Sure looks like mine.

 

PS  -  if it is not cracked, I'd be interested in it.


Edited by Charles Rice, 11 October 2018 - 20:15.


#3 mitto

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Posted 12 October 2018 - 04:31

There was a in-between size Duofold called Special. It was longer than the junior and a couple mm shorter than the senior. I, however, am not sure whether the girth was any different from that of a Junior.
Khan

#4 joss

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Posted 12 October 2018 - 08:20

The cap band looks a bit odd. The (raised or flush) cap band on the Duofold Sr was about 3 mm wide. This one appears to be wider.

Also the location of the breather hole is different from the three Sr caps.



#5 mitto

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Posted 13 October 2018 - 04:54

I wonder if it is a Duofold cap at all.
Khan






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