Oldest I've got is a 1947 Raleigh in bits. Then a 1949 I ride to work often
Admittedly, the Humber is in bits right now too, but I hope to get it running again for it's 100th year!
I tried to get as many period bits and accessories as possible, but it's difficult, especially as Raleigh took over Humber in 1932 and then continued to use the name as a range, so you need to make sure things are pre 1932 at least, as Bout 99% aren't.
It also has a 1928 Lucas bell amongst other things.