Originally Posted by
s70rguy
I do believe though, that the horizontal slit in the seatlug means its a Peter Serier built Presto. Peter worked from the mid- late 70s to the c. 1983 for Presto, for a while together with Jan Legrand. The horizontal slit was his trademark, or at least invented by him.
I'll confirm that. If it was a Legrand feature, it would have shown up on one of the SDBU Team Pro's.
That said, I was looking at a very late, Legrand-built 753 Raleigh Team Pro frame this morning (an oddball too - all Cinelli lugs). I would have had my doubts, except that it had the traditional Legrand caps, and the owner of the bike - the original owner - knew Jan (IIRC, hence why he had it made). It didn't even come with factory paint; one of Legrand's last frames, I believe.
Aside from that, past the Legrand caps, it had a normal seatstay slot. Had Legrand invented it, we would have probably seen those binders on the Team Pros.
One other thing of note - the frame has Legrand's open-end seatstays, but the chainstays were sealed up.
EDIT: It's a bad photo, but behind this Eisentraut is the frame I mention:
EDIT: Slightly better photo:
-Kurt