Dale Brown asked, provocatively,
"57 CM, serial #273! Early 1960s? Maybe even late 1950s?
+++++++++++++++++++++++++++++ No. There was a high-patina but lovely earlier (I am pretty sure) complete bike with a full Altenberger gruppo at Cirque at least twice. Good thing it was not my size, because that had funk out the gazoo!
But still a lovely frameset you sold, sir!
harvey