Steel gas station service bell on red steel wall mount. Back in the day, these hung on garage walls and were attached to an air hose that ran across the gas station driveway. A pulse of air from driving over the hose rang the bell — an unforgettable deep “ding” — and alerted station attendants that someone had pulled up to the pumps.

I’m firm at $25. A relic of another era, this bell runs twice that or more if you can find it online.