What's the booze?

i like how his apparent alcoholism goes unremarked-upon in this film. Mira knew he needed a drink (or three) to maintain, and that was Ok with her.

But when they break into the townhouse, and he pulls a bottle off the shelf - it has a big "60' on the label, and appears to be whiskey of some sort. Does anyone know what it was? It had a deep amber color and looked DELICIOUS.