"The Case of the Mystery Socket Set" solved! what is a WSW-100, WSW-101 etc mean on a set of Snap on sockets? I found out

WSW-105 USA 4 Snap on 9/16 W WSW-104 USA 3 Snap on 1/2 W WSW-103 USA 2 Snap on 7/16WWSW-102 USA 9 Snap on 7/16BSWSW-102 USA 7 Snap on 3/8WWSW-101 USA 0 Snap on 3/8BSWSW-101 USA 2 Snap on 5/16WWSW-100 USA 3 Snap on 1/4WWSW-100 USA 6 Snap on 1/4WSo, what do these have to do with what? Well, I listed them all because there isn't much info on the internet when I searched up each one of these.They are