Beer dedicated to Calvin missing “A” The damaged Calvin Theater sign in Northampton, Monday, April 18, 2016. The Calvin Theatre's A-less sign in Northampton has inspired a beer called C_LVIN. NORTHAMPTON – The city’s most notorious missing vowel is getting its very own beer. The C_LVIN India Pale Ale, named after the appearance of the Calvin Theatre sign with its missing “A,” is slated to be released this week at bars across the Valley as part of Western Mass Beer Week. The limited-release beer is a collaboration between Brewmaster Jack of Northampton and Abandoned Building Brewery of Easthampton. “It celebrates Northampton culture,” said Tyler Guilmette, owner of Brewmaster Jack.