And, the one treasure I did find in Toronto, a fine Italian double sided micro-mosaic brooch. Circa (approx) 1860-1880. Note the detail - the entire brooch measures perhaps an inch and a half in width; double sided (a rarity), found in a bag for $3.99 at National Thrift:
For a value comparison look here: https://www.1stdibs.com/buy/mosaic-brooch/
Sooo...perhaps next trip to TO will need to rent a car and do a little exploring...