Return to the thumbnail page Display/hide file information See next file

Sylvania F40/CW Comparison

Sylvania F40/CW Comparison

Click to view full size image

Through the years I've noticed some peculiar batches of 40w cool white Sylvania from the 80's. Aside from changing the end-cap style and using the GTE logo, there were other subtle differences.

Some had longer electrode leads than others, as shown above (black marker used) and the phosphor is grainy. On these lamps, they also have the 'V' stamp (Versailles factory) on the other end.

Maybe some of you guys know a bit about this, but I've seen the Versailles stamp on the smaller lamps as well as non-cool white (like /WW) 40w lamps. But, during the 80's , they were also /CW as well. Any back story on this?

sylvania1.jpg Last_PH.jpg 003_1~28.JPG 018_1~3.JPG

File information

File information

Download: Download this File
Filename:sylvania1.jpg
Album name:don93s / Various Lights
Keywords:Lamps
File Size:560 KB
Date added:Mar 15, 2019
Dimensions:2409 x 1807 pixels
Displayed:35 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-157353
Favorites:Add to Favorites
Comments
ace100w120v
Hero Member
*****
Offline

Gender: Male
Posts: 660
View Gallery


View Profile Personal Message (Offline)
Mar 16, 2019 at 12:22 AM Author: ace100w120v
Not real familiar with Sylvania, but I've noted that on many GE lamps the etch distance from the endocap varied. At some point the electrodes were re-designed to be longer ('90s-'00s lamps) as opposed to say the "Mainlighter" lamps of the 60s/70s/80s.
don93s
Sr. Member
****
Offline

Gender: Male
Posts: 425
View Gallery


View Profile Personal Message (Offline)
Mar 16, 2019 at 10:37 AM Author: don93s
Yeah, the GE lamps transitioned during the 80's. Some factories went to longer electrodes before others, just as some changed the etch before others. I've even seen lamps with the old style electrode on one end with the newer style on the other!
ace100w120v
Hero Member
*****
Offline

Gender: Male
Posts: 660
View Gallery


View Profile Personal Message (Offline)
Mar 16, 2019 at 03:28 PM Author: ace100w120v
Those must be an interesting anomaly!
© 2005-2019 Lighting-Gallery.net | Powered by: Coppermine Photo Gallery