There were 12 Angels in the 296-sticker set.
Stickers were issued in perforated strips of 10 player and 2 team logo stickers.
The Angels team came consecutively numbered from #24 to #35, except for the team logo sticker which was assigned #272.
I suppose if you unpeeled the stickers and stuck them somewhere (maybe on the mail-order poster) the backs would still be worth keeping since they feature a player profile.
Here's the team logo sticker.
I found two different backs on the logo sticker, one a checklist and one a promotional for the poster you can use to attach your stickers to.
I don't believe that the player stickers have the promo back variation.