I see the print run is listed at 1000. Are sealed sets marked with a serial number?
In the attached photo, I have a sealed set with "344" sticker on the front. I can't tell whether this set is glossy or not (it is hard to tell through the plastic bag), but other '87 Star sealed sets I see on eBay do not have the sticker. This is leading me to believe it could be one of the glossy sets. In addition, I have another Star set ('88 Platinum Mattingly) that I got at a different time that uses the same type of sticker (but also notes "of 1000" rather than just a number).
Any help would be appreciated!