Updated 14 March - acquired the BB1D in a trade, so now have one of each of the Universals, and one of each of the Chevrolets, including the Chevrolet variations.
Updated list:
Numbered 257s, 262s, 586s, 638s, 640s, 641s, 2035s, 2212s, 3377s, 4403s
Coded 4A1, 6A1, 6B1, 6B2, 6C1, 6C2, 6D1, 6D1R, 6F1, 6J2, 6J3, 6K2, 6K3, 6N1
Surely someone has some of these squirreled away.
Will buy, trade for, whatever; and I have some pretty good trade bait!
Jon