Chris
This is a 'gong' (from MGM Film)
Surely you mean a 'bell'?
How about an Aveling one?
Or a tram bell?
https://www.youtube.com/watch?v=VkmD4Z-HJww
http://www.ebay.co.uk/itm/BRASS-HANG...item5b0443a025
Same as above
of perhaps, one of these?, very much like what Garretts had
https://www.youtube.com/watch?v=4LKyMUFKpvs