OK, I took a closer look at the stamping on the bottom bracket today. It is stamped PDS, not POS, as I originally read it, then the number 7272 underneath that. I took the fork off and found the same number, 7272 stamped on the inside. So I'm guessing 7272 is the serial number and not an indication of 72º parallel frame geometry. Still not quite sure what I have, but it is my size and definitely a keeper.
Hello there, my name is Levi, I'm from the philippines, I just bought a 2nd hand mixte which I am currently getting repainted, when the paint was stripped off, we saw a 4 digit serial number with PDS letters.. I am on a journey in finding out what the brand of the frame is through small clues, at first, I looked at mixte bikes with the same design which I found on Maruishi and Lotus challenger xs to be similar, on my research, Lotus was a brand that hired maruishi or should I say collaborated to be one of their producers..
although non of the serial numbers of Maruishi and Lotus' serial number pattern match a PDS (3 letter) and 4 digit numbers..
1 more clue is that the frame has BOCAMA Lugs which from other articles or forums were made in france and used for classic italian frames from the late 70's and early 80's..
the japanese (maruishi) design and origin of the lugs does not match at all..
I found this thread as my first clue.. reading about Holdsworth, I went on to check for holdsworth serial numbers and I found a forum where some Holdsworth owners are recording data of Holdsworth bikes that are still out there by submitting the serial number.. it is stated there that a 4 digit number refers to frames that were customized built in the 70's but non of the serial numbers have letters on them.. and I sent them a photo of my serial number to verify if the frame that I have could actually be a Holdsworth, some one aswered the day after and confirmed that it was not..
So far it has led me back here which is the only clue that has a similarity with the serial number...
Ps. I would send a photo, my email, or the link of the forum for the holdsworth serial number data base, but this site is not allowing me, and I can't see the photos that you posted as well.
-levi