It is an 1893. Maybe try Pep Boys, Kragen/Grand, Napa or Autozone.
Here is a link on e-bay.
http://www.ebay.com/itm/Box-of-10-1893-Lam...159&vxp=mtrSD
QUOTE(steuspeed @ Aug 8 2014, 01:02 PM)
The guy at Carquest says it's part #914 and no one has them in town. I can barley make out the markings on the bulb. 12V 4W ??? What is it and where can I get some? Seems like this should be a common VW bulb.