A 1980s bottling of Old Grand-Dad 114 Barrel Proof with Lot No. 7 written on the back label. Old Grand-Dad 114 Proof was introduced in the 1970s, during the National Distillers era. Old Grand-Dad previously only produced 86 and 100 proof expressions. An ad for Old Grand-Dad 114 Proof from 1980 says: ‘Now there’s even more proof that Old Grand-Dad is Head of the Bourbon Family.’ We love (Old Grand-)Daddy-jokes here at Musthave Malts!