Yes, it's certainly a similar shape, which would tend to suggest that Nigel was right about the idea of mine being a biscuit jar. I have no idea what sort of lid mine might have, but I think probably not one like in the ebay listing, as there is no sign of wear on the outside - not that there's any on the inside either, but still!
Also the pattern on mine goes fairly high up near the top edge, and the edge has a chamfer cut on the inside of the rim. This would seem to indicate a lid which fitted inside rather than over the top
Has anyone any other pictures of this sort of biscuit jar with a glass lid?