Pascoag Utility NEMA Head

Odd to see this on a longer arm, though i think it looks better on the longer arm than it would on a typical 24" arm. It's HPS and has an Alto (the green dimple on the lamp). I'd guess it's 50W HPS but maybe it's 100W or even 70W, as this isn't NGrid territory ( This is the Pascoag Utility District ) so they may use 70W lamps. This is either a Cooper or AEL unit. For cobraheads they apparently used to use the Durastar (and the 115 seldomly) but now appear to use the OVH and OVZ. It's kinda odd seeing an OVH on an 18" NEMA head arm where a NEMA once was LOL. most of the arms are 6ft except the NEMA head arms which are all 18" exept this one.