After researching, it appears to be a label from a "Over land" brand cigar box sold by S.S. Pierce, a long-established American food and department store. I bought it because I liked locomotives at the time. I found out it depicts a Union Pacific Railroad steam locomotive passing through the Rocky Mountains. Recommended for railway enthusiasts and antique collectors. The frame width is approximately 32cm, height is approximately 26cm, and thickness is approximately 22mm, as measured by an amateur. The label itself is approximately 250mm wide and 185mm high. I believe the protective cover is acrylic. This is an antique art piece stored at home. It will be shipped in the original cardboard box from when I purchased it. Thank you for your consideration.