4 inches by 2.5 inches. Appears to be all brass. Inscribed on fob is:
Goldfield Hotel
If carried away return
Unsealed
By parcels post 2 cents
No key was on the fob but found a key with it in the box.
There is nothing on the back. The phots make it appear shinier than it really is, but no corrosion, rust etc. either.
Because I find more fakes than real items from this hotel was wondering if this is real.