I found these 3 Snap On sockets and adapter at an estate sale today.There are 2 1/2" drive sockets : SW300 15/16 , SW320 1" and a A 4 1/2 -3/8 adapter.The 2 sockets were made in 1948 and the adapter was made in 1947.I only have 1 older Snap On tool older than these and these are getting on the older end of things.I thought they were pretty cool.
All old Snap-On tools are sweet.