Antique Pocket Door Key :

This antique pocket door key is dual toned and composed of two metals. The upper half is brass while the lower half is attracted to a magnet and probably made of steel. The unusual shaped bit contains the text “2F2072” on one side and no writing on the other. I am uncertain exactly what that stands for, but it is possibly a code for that specific bit cutting. Most pocket door keys are solid brass, so this one is quite unique.   Key folds in the middle: One bit contains text “2F2072”: