I’d say there are some discrepancies here and there….and it also depends on which pattern you are talking about.

The “prototype” stamp was introduced maybe 2002-2003…so the older patterns start with a No.0….and way before that they started with No.1…kinda of a “figure it out as you go” kinda deal.

But for the most part you got it right
and I'd say Reese does the same