^^ Sounds like a good idea.
Cheap 70's TA-knock-off downtube cages are easy to find, and those modern Oxford handlebar mounts, but no-one does a vintage style handlebar cage. VO do a cast aluminium clamp like the Oxford ones which you can fit to their vintage cage - which is probably the best you'll find.
IIRC Elite made a Fausto Coppi anniversary edition aluminium bottle back in the 90's' to go with their Ciussi cages, but no vintage cage.
^^ Sounds like a good idea.
Cheap 70's TA-knock-off downtube cages are easy to find, and those modern Oxford handlebar mounts, but no-one does a vintage style handlebar cage. VO do a cast aluminium clamp like the Oxford ones which you can fit to their vintage cage - which is probably the best you'll find.
IIRC Elite made a Fausto Coppi anniversary edition aluminium bottle back in the 90's' to go with their Ciussi cages, but no vintage cage.
You're not alone in improvising your way of this problem - a quick UTFS called up this http://www.bikeforums.net/archive/index.php/t-833004.html