The 1455/56 Canadian variants were the 26875 and the
26933. I don't have any Simpson-Sears catalogs, so we can only assume the same
basic years of availability for these guitars.
One other variant of this guitar was the 'Audition.' With a Fender-y headstock,
a slightly different pickguard, an extra volume control, and a side mounted jack, it was the 'differentest'
of the alternates.
Audition was the 'house brand' of Woolworth/Woolco.
Years of availability unknown, generally assumed to be ca. 1968-1973,
the same as their Sears & Roebuck counterparts, with a similar price point.