All of the WAM's 98,99, and 00 that have been found were from Philly. If I recall correctly, Denver was producing it's own dies by then and the chance they produced the same error is slim to none.
What you might have is spacing from Die Deterioration. Post a pic and everyone will help to confirm.
What you might have is spacing from Die Deterioration. Post a pic and everyone will help to confirm.




















