LOCAL STAMPS. CITY EXPRESS. 28L2 AND CAL. PENNY POST 34LU6 CUT. Fakes?

This is a pair of United States back of book stamps, specifically from the Brooklyn City Express and California Penny Post. These stamps are of mixed quality and have not been certified. The numbers on the stamps are 28L2 and 34LU6, respectively. These stamps would be a unique addition to any stamp collection, offering a glimpse into the history and variety of United States postal issues. Please view photos for condition and Scott numbers. Bid with confidence as I refund completely if not fully satisfied. Thank you for looking.