most likely its a 205 watt since it was in a bigger insection....PEPCO does not have ANY mercury vapor NEMAs....all of the NEMAs PEPCO has are incandescent and was around a bunch of gumballs...
There used to be a lot of incandescent NEMAs in Toronto but they were all switched to MH. There's one hidden under a bridge that looks older than the others maybe it's still incandescent.
All the Best
Colin
What would be UGH is there being an incandescent fixture with a CFL in it! What a disaster that would be!!!