She's one fine looking vessel!
Looks like she was made about the same time as our G-26 - hull / sail #583 (built in Oakville, ON in 1973).
We have just retired and moved down the lake (Lake Ontario) to Cobourg from Oakville. Great sailing here as well, and right across the lake from Rochester NY.
Have some friends back in Oakville who used to work at Grampian marine when they were in business. They took their boatbuilding seriously.