Newly Acquired M-250R Installed on Tapered Arm!

The M-250A2 FCO looked pretty sharp on this arm but the silver M-250R is really killin' it! There were some silver M-250Rs installed on tapered arms around here, but they've all been the 1965 variety with the protruding tab on the latch (which I do have one of). These arms were not used before 1965 (at least not in noticeable numbers).

This beauty is 100W MV with a 120V regulator ballast (big 4-coil scoreboard buzzer GE ballast lol) with a capacitor in series with the lamp. This son-of-a-gun weighs as much as a newer 250W HPS M-250R2, I kid you not! The ballast in this isn't much smaller than a newer 250W HPS GE ballast lol. Can't get a good look at the ballast though since the bracket covers the entire ballast. One of the four screws holding the ballast bracket in place is stuck so I can't get to the ballast for a picture. I didn't want to force the screw and shear the head off.

This is installed with a 1986 Fisher Pierce photocell and a 1985 NOS Philips 100W clear lifeguard. I'll grab a lit pic of this sometime this week...