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
nineteen and eight-tenths cents

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

white star on blue background
bulk rate

design U173

You have identified design #U173, diagnostic for
Scott #U628 (printed in red and blue on white paper)