Sure is a nice bell. It does look different than other fleet boat bells. but that can be attributed to several factors: DRUM was built before wartime restrictions so its bell might be more spiffy (lines around circumference) than later bells. It was not an EB boat (EB bells in later GATOs were plain Janes by comparison), it had a significant career and somewhere along the line it may have been plated, as were some later bells. Fact is, with the cost os such things and the act that all the money traditionally went to the BB, you can be pretty sure nobody in AL would have likely spent the big bucks to replicate a bell for DRUM. DRUM is lucky to have her bell. COD's went missing when she arrived in Cleveland in 1959. Other museum boats have had to "buy" theirs back via ebay, etc., and sometimes have had to involve the NIS.
PF