On 17 Jun 2011 at 13:05, Dan Cotsirilos wrote: > My serial # starts with a 1 and ends with a 4 1xx4 and this stamp's total > length is about 3/8 " if that helps you determine if it is 3 or 5 numbers. Thanks, Dan. I'll check it out. It is either 3 or 4 numbers. Ken