Picked up a 3/8" ratchet today.
Round head. Knurled handle. Slotted selector switch. 7 5/8" length.
The only marking is stamped handle : CR-MOSTEEL
I suspect it stands for Chrome-Moly Steel. Perhaps.
No other marking or name.
Sorry. No pix. Anything you can add?
BTW, I also scored a completely roached Frank Mossberg No. 355 female rat in 11/16.
From AA:
"H. Channon 1916. The 1916 catalog No. 80 from the H. Channon Company lists Mossberg socket sets No. 10, No. 13, and No. 14, as well as a number of other Mossberg tools. One notable listing is for the No. 355 ratchet, the earliest known reference to this model. The No. 355 ratchet was priced at $1.00, compared with $2.00 for the No. 350 ratchet."
Mine is not so sweet as this one, but it is marked Pat Pend.
http://alloy-artifacts.org/Photos/tools/mossberg_1116dr_355_ratchet_no13_f_cropped_inset2.jpg