Glueks Beer concave bottom, usbc 165-6 CMT 4% Can has been black lighted and is all original, has original crown. I was told by a very knowledgeable Minnesota cone collector that the concave bottom cones are tougher to get then the flat bottom. Gluek Brewing CO. Minneapolis, MN. Grade1-

this is one of those cans that has a huge following, that mystique, and very desirable. We have had a grade 1 in the past, and these cans bring huge money. We believe prices are very strong with this Glueks. A ongrade example could sell for $7000 +