Originally Posted by
Charles Wahl
My circa 1962 reference was to the 881/881B rear dropout set, not the 880/881 set, which did exist earlier. The 881/881B set eliminated the integral derailleur mount. The earliest cataloguing of the 881/881B that I've seen is October 1962 (attached). It's not listed in any earlier literature that I've seen, including the 1960 catalog. Also note the change to JUY SIMPLEX lettering on the dropout, as opposed to LJ Simplex. The lettering and absence of the hanger matches the OP's bicycle and the circa 1962 date fits nicely with the Michels' having set up a bicycle shop in 1963.