Looking for socket to complete 1918 set

[Wrenchmensch]

I rescued this old socket set from near-oblivion. I cleaned it up and discovered the set is missing a 12 pt. 3/8" socket from the lower tray (see empty space in closeup photo).   The only markings on this socket will be the size, a "Made in U.S.A." stamp, and 1/4" vertical grooving located 1/8" up from the bottom edge of the socket. The socket bottom has a 1/2" hex opening.

Please PM if you have one of these and are willing to part with it.

Thanks!

[amertrac]

pm sent