Webthey are not considered major mint errors or generally worth much of a premium, although i haven't seen many with the coin struck through foreign matter on. Webwe check the colorado state quarter for the 3 o'clock cud error. find more errors with a usb microscope! Webin 2019 and 2020, the u. s. Produced w (west point, new york) mint mark quarters. Less than 5% of quarters produce in 2019 and 2020 have a w mint mark. Webthe colorado quarter was one of the several busy: And somewhat problematic designs in the series. The design placed quite a bit of stress on the dies,.
