I’m pretty sure this is the first revision of the Mountain Brew Beer Ice can design.
Took this pic while at Long Trail Brewing Co. on a visit there during my birthday week last year. I immediately got a ticket on the way home, obviously. Anyways, they have an extremely interesting collection of old vintage beer cans on several of the walls in their seating area. I could pretty much spend an entire day sipping on Double Bag and checking them all out.