This listing is for 2 packages of two (4 bulbs) new old stock Phillips Frosted 100 Watt 130 Volt A19 Incandescent Lamps.  These lamps have a standard E26 medium base.  They are rated 2120 hours when operated at 120 volts. 

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.