Original 1920s era bicycle horn made by the Seiss Mfg Co of Toledo--its a Klaxon type horn works with a plunger and makes the classic aah-ooga sound...appears to have never been used.. in very good condition with no damages or excessive wear- complete with original label,mounting hardware and silver finish....bike horn is 3 1/4 x 3....looks and sounds great and guaranteed original and authentic ....Shipping is via USPS in US and overseas…...always glad to combine on multiple buys when possible