Hello Cobba
The bottle is staying. Definitely.
The Alma was a bit unusual for Wolseley as it was their only horizontal engine. From what I've found out so far, most of them were exported to New Zealand and here. I can imagine they were to compete with the M-types, horizontal Coopers, horizontal Sundial's etc of the day.
Not much is known about them.
Size wise, this Alma is considerable smaller then a 3hp M-type. I forgot to mention the Alma is 3hp.
The Alma was also throttle governed.
It is unknown when production started or finished. The Wolseley registry here has very few of them. But in saying that, it's said production started in about 1922 and went until 1925. If that is correct, then this engine, with serial number 561 and date of July 1923, puts in roughly the middle or towards the sad end of the production time frame. Not many were made it seems.
The next thing to sort out are all the bearings on the poor old girl. The big end knocks very badly. That to me, is more important then fuel tanks and/or exhaust or making it look pretty. A lot more important.
Cheers Scott