Just bought a used Canon AE-1, with the silver body, i got 3 lenses with it.
The one lens has this on. B&H/Canon lens, FD 24mm 1:2.8 and S.S.C in RED Capatial letters.
What does S.S.C. mean, also it has another small thin lens screwed on to it.
It reads, Rolev M.G. 35MM Sky in Capatial Letter, does the add on lens means it is a 35MM Lens instead of a 24MM Lens DAAAAAA??
SSC doesn't mean much - just Super Spectra Coating which is just a name Canon gave to their lens coating.
The "lens" is in fact a filter. A "Skylight" filter. It is designed to block UV light and may also be slightly tinted to give a warm-up effect. Many people put these filters (or UV filters, which are similar) on all their lenses to protect the front element of the lens.
The "35mm" probably refers to the filter's thread size.