Marty,
The build sheet may have been the clue!!
As previously posted, my car is '90 #0442. The masking tape on the front of the glass top has 987 written on it and the glass top is properly stamped with the car's VIN.
On the build sheet in space #10, top left corner has :
SCHED.NO.DATE 014987.
Notice the last 3 numbers match the masking tape.
On the build sheet in space #24, top right corner has:
DP.SEQ.NO. 05829(space)014987
From this info I would surmise that the tape was marked to correspond with sequence number, not the vehicles VIN.
Mark, have not had a chance to get my glass top out, but will soon and document the info at rear center of the top.