5/16 inch * Letters - uppercase A-Z plus the ampersand '&' * Numbers - 0-9 No strike marks. Appears to never have been used. https://www.princessauto.com/en/detail/9-pc-5-16-in-number-stamp-set/A-p8785446e https://www.princessauto.com/en/detail/27-pc-5-16-in-letter-stamp-set/A-p8785453e Estate sale. Hoping that some crafty or labelly person gets good use out of this. $30