Identification guide for designs of United States stamped envelopes, wrappers, and letter sheets.

Identification guide for designs of United States stamped envelopes, wrappers, and letter sheets
eight and five-tenths cents

There is only 1 design of an indicium whose face value is eight and five-tenths cents. It is:

Mayflower

design U156

You have identified design #U156, diagnostic for
Scott #U610 (printed in black and gray on white paper).