Well, grandpa has surprised me once again. While down in his workshop I found what appears to be a PC switch Key.... and the turn bar to open switches.... how rare are the keys?? It is gold, about 3 to 4 inches in length and has "PCRR" stamped into the top.....
Not rare at all.
Prior to PC, the NYC had divisional switch locks and keys. Working on the Western District (Buffalo to Chicago) we had Buffalo, Lake, Toledo, and Western Div. keys, plus Detroit, Ohio, and CUT keys for the other divisions which we had rights on, plus the keys for the foreign lines over which we also ran.
The Toledo Div. had all of the divisional locks replaced on a single day. The only problem was that a full distribution of the PC switch keys was not made prior to that day. A lot of new locks were battered off so crews could do the work.