That was "Guitars Unlimited", famous as both Jerry Garcia and Bob Weir got jobs there as guitar instructors in 1965 and took all of their equipment from there.
Jerry was Bobby's guitar teacher at Guitars Unlimited! (possibly thereafter Bobby taught there, that I do not know) Bobby was still in high school, and could get "lids" of weed- really easilly; and for this reason, he was invited to join the Grateful Dead. Some years later they tried to boot him out. Bobby thought they were joking around. Then Garcia said something that triggered Bobby to say "wow you guys are serious." And it was back to taking lessons from Garcia haa
Anyway, do not touch the Guitars Unlimted sticker! You may ruin both the Guitars Unlimted sticker and the Guild label. just leave it, don't touch any of that. That GU sticker may significantly increase the value of a 79/80 Guild D-40, as Dead heads will happily overpay, big time, for a bucket list find like this (it just takes one buyer from millions of Dead heads). GD is widely acknowledged for being associated with both Guilds, and that particular guitar shop. The shop closed 44 years ago, and you have one of the very last guitars, and stickers, that went out the door! Super cool find, especially if you are into the Grateful Dead. If you are not, I would enjoy the guitar but preserve its condition and association with that shop, and with GD. Even a casual GD fan looking, for a Guild D-40, would pay at the high end of the D-40 spectrum, for that one. I happen to really like that late 70's early 80's era. Very different than Hoboken, not better or worse. probably the peak period of all sunbursts though, overall, at least pre Fender (debateable, i know...just my take)
There is a chance Guitars Unlimited is also where
@mgod's (RIP) brother aquired Phil's hollow M-85 with F-holes for him, and met Jorma who was stunned to learned 1) The bass was leaving the shop, and 2) some kid from New Jersey was winding up with it. But, i'm not sure if it was the same place.
And hey great news about your mother getting thru the chemo. As long as you are there for her, you can buy as many Guild D-40's as you like- seems to be working out so far