is it some kind of commemorative cap?
Budweiser began in 1876, when the E. Anheuser Brewing Association of St. Louis introduced Budweiser Lager Beer. This isn't necessarily a commemorative cap, it's just one of their many cap styles they have. I've drank A LOT of beer over the past 20 years and I remember this particular cap from not more than a few years ago.
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