Info on Szladeky lock from Budapest

[GregWhitney]

I recently acquired a lock that is said to have been used by the Budapest Postal Service. I believe the lock was made by Szladeky and has both Budapest and Szladeky stamped on the lock. This lock also appears to have been able to utilize a paper seal over the keyhole to provide tamper evidence.

I am attaching photos of this lock and I would be grateful if anyone could provide more information on it. I would be interested to know the history of this lock, whether it was used by the postal service, what years it may have been in use and any other information available.

Thank you very much for your time and consideration of this request.