http://www.embacher-collection.com/collection.html
Dorotheum online catalog
My favorite one:
Which one(s) will you try to buy BSA?
Oh yes…if I had a bunch of 100€ notes leftover I’d attend the auction…
My clear favourite is the 5 gear bottom bracket drive of the 50’s-
the Mervil Mervilex
…and the one of a kind Titanium Moulton is also not that bad…