Just an observation: I was considering spiffing-up my newly-acquired 60's Peugeot PL?10 by replacing tube seat-pin with badged Simplex. But it appears that these posts with integral clamp may not work with Al-framed Ideale's...is this true? Do Al-framed Ideale's require a different model Simplex-badged post or must they be used with plain pin and Al-specific separate clamp? If so, I imagine this is because Al-framed Ideales pre-date Simplex-badged posts?
Anyone ever see a Simplex-badged post married to an Al-framed Ideale?
Jack Romans
Sacramento, CA