Crossword puzzle clue "rare sign"

Rare sign?

Good sign or bad sign

Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig

Sign of danger — sign of socialism

Pre-sign sign

Rare shoe specification

Placed on eBay for rare concert tee?

Rare blood type