But could you please change the "89" on the spine into "88"?
The cover is for Big Bang 1989, not '88. The show was aired on New Year's Eve, 1988.12.31.
Correct, the show was called Big Bang 1989, but New Year's Eve here is Decenber 31st, 1988. This show counts down towards 1989, so the date definetly is 12/31/1988