The cut on Rouser is a different take to the Fairmount one, for instance the sax break on the Rouser is tiny, it's only 6 seconds long. Fairmount is over 12 seconds long. A lot more bass & punch to the Rouser. It seems that when they decided to go for a release with Fairmount they had to be more in keeping with the fashion of the time, hence the longer sax break & a slightly more refined sound.
I managed to get that one off ebay that time, it was a gamble as the guy didn't know anything about records, so he couldn't put a proper grade on it. Luckily when it turned up it was in real nice condition, & the dirt on the label (see AWAKE502's picture) was just sitting on the surface, so a light wipe over with damp cotton wool had it looking good as new.