What a great looking tap bell! I would like to see some additional photos, such as;
– a close up of the designs on the pedestal and the Bell skirt – just to see if the designs might be identifiable. For example are they plant leaf mostly? (Possibly Art Nouveau maybe?)
– Can you tell how the base is attached to the bell? The types of screws have distinct invention dates that can help age it, or help isolate where it was made. The coarseness of the threads can tell a bit about age too (older threads were first hand cut (very uneven), later had rough lathes so were wide and ‘sloped’ differently than today, and more modern ones were usually much finer and better cut).
– I assume you tested with a magnet to see if it was nickel/iron? It would stick then. I don’t see rust so you might peek inside if you can (a good flashlight at night in the gap might help you there). While there check to see how many ‘clappers’ it has, some older / more posh models appear to have two while most only have one.
Also look carefully inside the base for marks, they are often hidden in the most unlikely spots!
I personally don’t see anything so far to rule out your supposition, it does look very European to my eye too!