Burruss has these freewheels for sale on Craigslist. for $10 each. he sent me this list. Contact him for more data.
''Burruss Williams
262 495 2747
burrussw@earthlink.net Freewheels
ST= Sun tour Shim = Shimano reg=Regina
Type New/used # of sprockets spread
ST perfect u 5 13-32
Shim u 5 14-30
ST u 5 13-28
Shim UG u 5 14-28
ST u 5 13-22
ST u 5 13-24
Reg u 5 14-22
Reg Oro u 5 14-22
ST u 5 13-24
Reg Corsa u 5 13-19
ST winner n 5 13-21
Atom n 5 14-24
Shim u 5 14-28
ST winner n 5 13-19
ST winner n 5 13-21
ST n 5 13-19
ST n 5 13-19
ST u 6 14-28
Shim u 6 13-24
ST n 6 14-24
Reg Oro u 6 14-24
Shim u 6 13-28
ST u 6 13-24
ST u 6 13-30
Shim u 6 14-28
ST u 6 13-34
Maillard u 6 13-24
ST u 6 13-28
Shim u 6 14-28
Reg u 6 13-21
Reg Oro u 6 13-19
Shim Hyper G n 7 11-34''
>From that great rider of bicycles i.e. slow
Charles Nighbor
Walnut Creek, CA