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Bonusline /W! 
This sorta rare lamp came with one of my Revere Urban-Lites. The arctube has a bit of whitening but is on overall great shape. The /W to me sorta looks like a more bluish /DX lamp. Not sure how old it is but the base was marked J 6 so I guess it was probably installed in January 1966. Date code 17. 
Keywords: American_Streetlights

Bonusline /W!

This sorta rare lamp came with one of my Revere Urban-Lites. The arctube has a bit of whitening but is on overall great shape. The /W to me sorta looks like a more bluish /DX lamp. Not sure how old it is but the base was marked J 6 so I guess it was probably installed in January 1966. Date code 17.

COL_IMG_3498.JPG COL_IMG_3262.JPG COL_IMG_1533.JPG COL_IMG_1404.JPG COL_IMG_0876.JPG
File information
Filename:COL_IMG_1533.JPG
Album name:joe_347V / HID Lamps
Keywords:American_Streetlights
Company and Date Manufactured:General Electric, May 1965
Model Number:H175W39-22
Wattage:175w
Lamp Type:Mercury vapour
Filesize:36 KiB
Date added:Jul 13, 2014
Dimensions:700 x 467 pixels
Displayed:131 times
Color Space:sRGB
DateTime Original:2014:07:12 21:19:34
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:1/60 sec
FNumber:f/4.5
Flash:Compulsory Flash
Focal length:35 mm
ISO:100
Make:Canon
Model:Canon EOS REBEL T3
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=17820
Favorites:Add to Favorites

Comment 1 to 7 of 7
Page: 1

streetlight98   [Jul 13, 2014 at 07:10 PM]
Nice! Yeah it's gotta be from after 1965 (or close to that time, dunno exactly when) since GE switched to ED lamps around the time the Powr/Door lights came out.
joe_347V   [Jul 14, 2014 at 03:31 AM]
Thanks, yeah I guess 1965 sounds about right. I wonder if this might be the the Revere's original lamp. Cool Mid 60s sounds a bit late for a remote ballasted merc light though.

Edit: thanks to Dave for dating this lamp to May 1965.
Form109   [Jul 15, 2014 at 09:53 PM]
that's a nice lamp....the /W lamps have a distinctly different color than /DX Lamps. I think ive seen a few but they seem much less common than DX tho.
streetlight98   [Jul 15, 2014 at 10:41 PM]
Ah so this is one of the first ED GE lamps. Cool yeah they made remote ballasted mercs up until around 1970 or so. The smaller fixtures were generally internally balalsted from around the late 50s onward if they were 240V though since even back then, the 240V reactors were small enough to fit inside the incandescent NEMAs of the time.
GEsoftwhite100watts   [Aug 28, 2014 at 01:38 AM]
Very cool find! What's the startup sequence like? Is it still pinkish-reddish at first like a /DX? And what about a /C? (I've never seen anything except clear and /DX in person)
joe_347V   [Sep 01, 2016 at 07:02 PM]
It sorta looks like a aged /DX starting up. There's minimal reddish glow but that might be because the /W phosphors don't really add much red to the spectrum. Reds under a fully warmed up /W are still a bit off. Not sure if a NOS /W would be the same though.

I've seen a /DX, /W and a /N in person. I have a couple of /C mercs but I've never been able to get them to start.
streetlight98   [Sep 02, 2016 at 12:15 AM]
A /C merc is similar to /DX when new. Colored fluoresce more under /C though (like how yellows and neon colors pop under clear mercs; they do the same under /C, but the bulb itself glows more of a cool white color). When /Cs age they get very yellowish green unlike /DX which pretty much looks the same used as new other than the pinkish tint being less pronounced.

Comment 1 to 7 of 7
Page: 1