Got 5 of these beauties off eBay. Mfd August 1982 at the former Trois Riveres Quebec plant. They are similar to the US made Westinghouse Lifeguard mercs with a few minor differences.
Thanks all! There are a few minor differences between these and the US Westys. The stem press lacks the factory and date codes, the basing cement is a little different, and the arc tube pinched seals look slightly more rounded. Also these lamps are early 80s and still had the older full frame support while the US 175s went to the wrapped frame from about '78-'80 on.
I know the old US Westys are rare, seeing a Canadian Westy Lamp is even rarer
All the Best
Colin