I gotta say, I think I agree. Also, the two I found look like they are Gen 2 (slightly rounded) and Gen 2.5 (boxed but with indentation). They sure dont look like gen3 (same as modern ones but with no engraving and with a sticker indentation). I will get pics of them this week.
Someone needs to do a propper lineup picture of all types. Now, who wants to "lend" me their gen1s?