Hi there
Your safe, in modern terms, & without being too derogatory is just a bag of spanners. (scrap to most folk), however, if you want to sell it, you would be advised to stick in on e-bay. Only downside is that you may get offers from antique dealers who want it for a song to do up & sell for big bucks.
There are quite a few of us collectors who love the history, safes, plaques who may want it to preserve/renovate. (Me included).
Why not send an image to this site offering it?
Look foward to seing an image.
If you need further advice, please give me a call. 07976 565757.
Regards
Russell (Withy Grove-Leeds)