We recently spotted this sign on Vine Street, at Elder.
Our guess is the "B" is the beginning of Bakery or Baked Goods.
We're unclear why what's going on with this building, as there's no recent sign of construction activity, but we can attest that this was uncovered this year. A look at Google Streetview shows the fake stone covering up in April of 2019.
And here's a bonus sign, (previously shared), across the street: