Flint (leaded) as different from soda-lime. It's in inventory as flint but the fact that since that old entry I've see the ruby-stained piece, it appears to be an error on my part. Of course yours could be called crystal, since it's colorless. I agree that it's the latter part of the 19th C. Canadian sources attribute it to Burlington Glass Works based on shards, but that's invalid, sadly, they use shards for a lot of attributions, when most were probably used as cullet. Burlington was a bottle factory, not known for tableware, so most if not all those attributions are mistaken. England is the better choice.