Every "ghost sign" is ironic, for it has survived the product or business it was created to promote.
Unlike actual phantoms, most ghost signs are best seen in bright sunlight. Often ancient signs have the brightest colors, for they hibernated out of the elements while wind, sun, and rain stripped away overpainted layers of modern signs.
The "Pillsbury's Best" logo on this Gloversville building's side wall advertises a brand of flour that is still manufactured. "Glove City Chevrolet", which is overprinted on the older signs like a cancellation on a stamp, promotes a business of the 1940s to1970s.
The rest of the wall is like an inkblot. If you stare long enough, your eye begins to trace patterns in the shadows and paint splotches on the brick. The shape behind the word "City" suggests a milk bottle, perhaps associated with a company named "Kline".