I grew up in Terre Haute . One of my mother's neighbors was a city fireman with a State Police brother in law. He had in 1974 or very early 75 picked up one of the model 66 in question. He told me it was possible for the department member to order two at that time. His was the "extra" from the BIL. Any ideas how the numbering would have been handled? The employee number would not have been unique on the second.