G'day fish. Victa adopted the Bosch plug (175/T2) in March 1957, which would be around serial #75-80,000. The Champion N21 (I think) was adopted around the intro of the Special. I don't recall what they used before the Bosch, sorry. The Champion N21 is the go to plug these days.

Last edited by unkiemonk; 21/02/14 08:31 AM.