When the switch was made to Krupp barrels/Dutch receivers, I believe ICD jumped into the 471,000 range. They did not produce 1,000 guns from Italian parts, so I believe there were a lot of unused 470xxx SN's. Tom may know more, but that's how I understand it.

The Beschi guns are real easy. They don't say "Ithaca Classic Doubles". And you wouldn't have been delivering them for Steve. They were rejects and had nothing to do with ICD, other than having been rejected (or maybe never received, after they switched to Krupp barrels/Dutch receivers) by ICD.