This is Crouse-Hinds/Cooper Lighting 150W HPS OVC. This is the Canadian version of the OVC.
Manufacture date: May 1991
Manufactured in: Granby, Quebec Canada
Voltage: 120V
Well, with new info We've found, the OVC was the Crouse-hinds predessor to the OVZ. The OVC was made by Crouse-Hinds and was a companion to the OVS. It was only avaliable in 50-150w HPS. It was to allow a lower cost unit to make HPS more affordable.
The silver AE 13s and 25s were physically the same as the 70s-very early 80s versions, except the early ones didn't have a mount for the bubble level and also they didn't have the ITT logo, only American Electric. The very first AEs were longer and rounded, they had the models Series 13-000 and 15-000.
I ask to see the insides because that's what I like to see sometimes, I like to see how they are set up and how different they are. It's one of the things I am interested in with streetlights! It's not a crime to ask what the inside looks like.
I've also seen silver ones too.
BTW in the USA the very first AE 13s and 25s were silver. I have a recent pic of one.
But the early Model 25 was very similar (same size and shape and deisgn with a few minor differences) to the regular model 25?