The US version of the plush has no bell! At first I thought mine was defective but I looked on the Pokemon Center store and the production photo has no bell either. The only thing I can think of as the reason is that they didn't want young children choking on it if they received one as a gift.
Very slight differences in the pattern between m ine but there are always small differences between each plush.
And one of the main reasons I wanted to post this was to show off that beautiful Japanese tag. The tags on the Japanese plush are always so lovely. I'll try to get a scan of it sometime for you guys!
Well that's all for now; I just figured some people might be interested in seeing this!