He had it listed as 1930s but it's likely 1950s. The older Sylvania bulb (CW) had minimal use. When I hit the start button the ends lit up blue so I held the button down for 15 seconds and both ends turned BLACK from the mercury and 30 minutes later it is mostly burned off. The bulb likely has more mercury than 10 F40T12 Alto lamps.....
It was $32 I think with shipping.
It has very interesting construction. Too bad they couldn't have made the base a tad taller to house the ballast.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180688610993&ssPageName=STRK:MEWNX:IT