[SHowley2003]

So I recently grabbed a Pierce Stadium Club Chrome RC graded by PSA. The seller had a base and refractor version up for bid. Both of them were labeled by PSA as 1999 Preview. Other than that the cards look identical to the 1998-99 SC Chrome cards. There are no markings that distinguish it from being any different from the base RC. I even have a refractor to compare it to.

I have found on several RCs made by Topps (released for the 98-99 season) that it is 50/50 whether PSA labels them as 1999 or 1998. So I didn't find this odd. Does anyone know what the "preview" classification is all about? I couldn't find anything listed in Beckett.

Thanks for any assistance.