Marpan Supply Company, Inc.  
incandescent a-line

 incandescent
 a-line
A15 - clear utility light, inside frosted, safeline teflon coated, reflector sign, appliance, range oven, ceiling fan, red, aluminum or brass base, 15, 30, 40 and 60 watts. A19 - clear, inside frosted, soft white, colored in green, yellow, red, pink, blue and orange, sign and street light group replacement, bug light, rough and vibration service, long life supersaver, aluminum or brass base, 25 to 135 watts.
A21 - clear utility light, inside frosted, soft white, safeline teflon coated, long life supersaver, aluminum and brass base, 75 to 200 watts. A23 - clear, inside frosted, oven, krypton filled street light, rough service, aluminum or brass base, 100 to 200 watts.
see a similar design
called pear shape