USA 'Omnibus 1880s' 1-Cent Postage Stamps (Strip of 3)

The item consists of three identical, unused postage stamps, still joined together in a horizontal strip. Each stamp depicts an 'Omnibus 1880s' in a monochromatic purple or violet ink against a white or off-white background. The design features a detailed illustration of a horse-drawn omnibus, a type of public transport vehicle common in the late 19th century. Below the image, the text 'Omnibus 1880s' is clearly printed, followed by '1 USA' indicating the denomination of 1 cent and the country of origin, United States of America. Each stamp has serrated perforations around all four edges, typical for postage stamps, suggesting they are meant to be separated for individual use. The stamps appear to be in excellent, uncirculated condition, with no visible signs of creasing, tearing, or foxing. The colors are vibrant and consistent across all three stamps, indicating good preservation. There are no discernible cancellations or markings that would suggest they have been used for postage. The reverse side is not visible, so the condition of the adhesive gum cannot be assessed. Based on the 'Omnibus 1880s' inscription and common philatelic issues referencing historical periods, these stamps likely belong to a commemorative series and could date from the latter half of the 20th century or early 21st century, rather than being from the 1880s themselves. The craftsmanship appears to be standard for government-issued postage, with clear, precise printing and consistent perforation.