Edelstein Roofing Sign on 7th & 7th

In a neighborhood where we see many bits of history every day, we may not notice them all. Some are older than others, of course, and one of the more recent signs of the past is quite literally a sign.

Affixed to the building at the southwest corner of 7th Street and 7th Avenue is an Edelstein Roofing sign. The company, which still operates out of Brooklyn, has been around for decades. Though this sign doesn’t look too recent, it is newer (note the area code) than some others that you’ll see around the borough: here’s one with a telephone exchange, here’s another version from that same time but larger, and here’s one that goes way back.

Anyone have a guess as to when this sign was posted?