Need Help Identifying Guatemala Stamp

Luis Mon

Any help would be appreciated.

Scott Payton

Guatemalan Philatelic Exhibition overprint. Gibbons GT331, Michel GT338.
Interestingly it's an "overprint of an overprint.
The bird was overprint on the original issue, and then they added exposition overprint later.

Luis Mon

Interesting stuff. Are those stamps listed in Scott's? Thanks for the info.

Jerold Backstrom

This is Scott CB3, one in a set of 4.

Luis Mon

Thanks so much Jerold.