antique For Sale

• Material: likely brass or gilt brass.
• Purpose: measuring the diameter of coins and other small round metal objects.
• Design: it has a circular measuring section at the top and a long graduated ruler with fine measurement marks.
• Historical use: tools like this were useful to coin dealers, collectors, merchants, and money changers for checking and comparing coin sizes.
• Age: the exact date cannot be determined from the photo alone. The style suggests an older/vintage piece, but I would not confidently call it 18th or 19th century without examining the markings.
• Value: I would not rely on a $50–$200 estimate from the photo alone. The value can change substantially if it has a maker's mark, patent number, shop name, unusual decoration, or documented age.

Most important: please send me a clear close-up photo of both sides of the round disk and the ruler markings, especially any letters/numbers or symbols. I can then try to identify the country, approximate date, manufacturer, rarity, and realistic collector value.