There is a member here "Doc44" who is the Forum expert on everything Model 29. There used to be an expert commentary section where he explains the differences in the & (ampersand). Sadly, I no longer see the expert commentary section. The one you talk about that looks like a 4 year old did it is affectionately called the "Lazy A". It was generally used till about 1970, although there were other variations of the ampersand used during the 60's and 70's.