Dale,
Nice PX-10. The lugs place it closer to 1970-3, but if memory serves me, the alloy derailleurs weren't available until after about 1976. I believe that they must be later modifications, as is the Ideale 2001 saddle. The Ambrosio rims are definitely replacements--I don't believe the PX10's of this era ever had anything except Mavic rims as original equipment.
> We have a PX-10 for sale at CDO.
> Pictures and price, etc., are here.
>
> http://www.cyclesdeoro.com/
>
> Now, what approximate year of manuf. do you think it is?
> It has Simplex alloy LJ shifters, Mafac 2000s, Ideale 2001 saddle (in
> rough
> fuzzy shape), pre_ti Reynolds tubing decal...
>
> Dale Brown
> Greensboro, NC USA