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GE H15GV 700w/1000w Clear Mercury
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I got this at the end of December from a local seller. I almost passed it up as the ad merely said something like large mogul based light bulb so I thought it was a modern MH. However the long arc tube, full frame, and lack of white paint screamed clear 1000w MV to me which is a lamp I always wanted. This also marks my last lamp for the year 2020.
Anyway this a fairly interesting lamp, it's technically a 1000w lamp but it's also rated for operation on 700w ballasts, hence the dual wattage on the etch. Also never seen such a simple MV etch. The catalogue description for this lamp states that operation at 700w "shows excellent lumen-maintenance and life performance, so that its total "cost of light" is equal to or less than that for the 700-watt lamp on the same ballast."
My catalogue sleuthing pins this being made around 1960 or so, pre Bonusline but with a post 1950s arctube design. Unfortunately I don't think I saw any date code markings anywhere on the lamp. The ballast code is ASA H15, the predecessor to the later ANSI H36 standard.
Lamp data is from the 1960 GE Large Lamp Catalogue.
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