My family has a 3,900 pound 1880's Mosler safe that we are looking to find some info on it and are hoping to get a rough estimate of the value of this safe. The information we have found on it is...

Inside Right door writing:
Pat.M'ch.22.
'81.M'ch.6.
July 17.&
Aug.28.'83

Inside left door writing:
Mosler Safe & Lock Co
Cincinnati. O.
Pat.M'ch.22" '81. M'ch.6.
July 17" Aug.28." '83.

I have found minimal information on this safe, found many that are smaller made by Mosler but none quite this size.
I can provide pictures if needed via email as this sites uploader isn't working for me.

Thanks for your time!
Brandon