This listing is for a new old stock Sylvania PAR38 50 Watt Halogen Flood Lamp Bulb.  This lamp was commonly used in exterior lighting.  It is full dimmable.  

Your satisfaction is guaranteed. All items are shipped via the US Post Office (USPS). I make every effort to ship your item within 24 hours following receipt of payment, except for Sundays or Holidays when the post office is closed.