Gee, I have three old ones, 1910,1911,1951 201-3, 1977 Kenmore, 1997 Kenmore 19000 emboridery, brother and babylock 3 thread serger and Janome 4 thread. Would have more but no place to put them so try not to look.
I can't even think about 40-60. My husband has way to many of his toys, but I quit. Love seeing the ones people on here find and buy.