Hey Si:
The 48 (1951-56)was the first machine to take the bayonette fitting. The 60 (1957-60)was the successor of the 48 and was pretty much the same machine except for colour (see below). The ends and handle were red plastic and the body red/black/white multi fleck which resulted in a sort of tan colour.
Where the European machines changed over entirely to the bayonette fitting hoses by 1965 the Canadian machines never used them at all and kept the ball snap action fitting till the end of the model 89 run in 1973.
(again a picture from the net)
[ATTACH=full]18804[/ATTACH]
