[TA Forbes]

You often find similar things written in pencil on the chassis, speaker, and even tube sheilds. My 37-610 console has the last date the radio was in the shop, what was done, and the techs name written in pencil on the aft portion of the RF deck. I have gotten "virgin" radios in that had the tube types written on the chassis next to where they go, both on the top and on the bottom of the chassis. An 8" speaker I have for the non shouldered 116B I have not found yet has the color code and location for the speaker wires on it. Some of my sets have a label or a stamped ink logo from either the shop that sold it or the shop that fixed it.