1981 Fleer Baseball Stickers 4 Pack

I recently received a picture of an item I'd never seen before - a 4 pack of 1981 Fleer Baseball Stickers:

I don't think I've ever seen a rak pack from Fleer or any other card manufacturer that offered 4 packs together.  Based on the generic header card, it looks like Fleer may have used this configuration for other items as well.

Thanks to Joe for passing along this interesting packaging variation!