As far as I know Blumbly at least a partial amount of 49s had a plastic cap.
Its true The tin cap was standard on torque major engines. SB being no exception, but Im certain SB had another Plastic cap at some point in the run as well. Maybe the last of the series?
Ill see what I can find in my brochures.
The tin cap will be the same as early Victa, just usually in white on most mowers, and red on SB:)
Either way, go with the Tin as its definitely correct.
