The store carries Alta Dena brand butter. Most supermarkets only carry the quartered pound (four half sticks) in the newest retail packaging. This store also sells the full pound blocks. If I didn't know better, it'd seem that they've got some very old butter on the shelf... or Alta Dena doesn't really care about the packaging on the pound blocks:

Alta Dena Butter by dirtyblueshirt, on Flickr
The half-sticks have the most recent retail packaging. The Unsalted butter has a logo that showed up in the 1990's, and the salted butter has a logo from the 1980's or earlier.