Traditional Bulb.. but amber.
Twin filament bulb with staggered pins... often used for blinkers and blinker/park ... and locally used to convert reverse lamps into Amber flashers as possible or required or other needed.
with this base ![](/usgmsp/images/images/1157Base2.jpg)
Check the pins.. and remember these reflect AMBER.
Supplied as a PAIR set.
Other types of bulb bases are shown below to help you identify yours.
![](/usgmsp/images/images/BulbTypes.jpg)