The Otto Gas Engine Works | Sheaff : ephemera

The Otto Gas Engine Works

Advertising cover with facsimile stamp and facsimile Philadelphia circular date stamp cancellation, 1897.
This cover is addressed to the famous philatelist, Hiram Deats.

      Contact:    All images not otherwise indicated are copyrighted by Richard D. Sheaff and not to be used for any purpose without written permission.