Quoted from jrpinball:
Those are Hamm's cans, not PBR. Hamm's is pretty decent for a cheapie beer. Better than PBR. The worst beer ever is Utica Club! That stuff tastes like chemical soaked cardboard!
They're not all Hamm's cans. Lots of PBR in that photo, too (circled below), and since this is a thread about a Pabst licensed pinball machine, PhilGreg was correct to point out the PBR cans in the photo.