I also have an issue with the 1996 Guerrero pre-rookie Expos warm up and the 1997 Pre-season Rookie jersey.

The 1996 pre-rookie warm up is a size 46 and the 1997 jersey is a size 44. The 1996 West Palm Beach jersey is a size 48 so he went from a size 48 to a size 46 in the same season and then the next season went to a size 44. I know Guerrero wore a size 48 his rookie year in 1997. I don't think that Guerrero started out in 1993 with a size 48 moved to a size 46 in 1994 & 1995 and then wore a 46 and a 48 in 1996, then went down to a size 44 in 1997 and then back up to a size 48 the same year.

I am perplexed about the 1997 pre-season jersey as it's a size 44 which I don't beleive he wore but it does have his name on the back. Wilton, his brother didn't join the Expos until the next year in 1998. The only thing I can think of is that Wilton wore this some time during his career with the Expos and this could be his jersey.