An old catalog in my hand

 I used to play with super sriver, spinnier with more control than Sriver L or S. Sriver killer was an anti-loop, dead as hell. 

yasaka came out with a rubber called "V Stage"

is that "five stage" or "vee stage" ??

:)

 'look It snaps at the ball' 

Yasaka made it ,  it could do any shot !!

 It was never the same as when it was in its natural colour, which was  yellow/gold/brownish which I think they used to say was the natural colour of the cachouc rubber rubber used.

 I don't  think they made super sriver in black, they always seemed to have problems with the dyes in those days, black rubbers were always considerably slower than red, but black glued up better, which is why many players used it on their f/hands. I can remember quite a few players playing with Sriver killer topsheet on mark V sponge so they could mix the spin and hit John Hilton style. Rubber regulations were not so strict back in the day.

 You had to contact thin, off the top sheet with low pace, it wasn't a loop driving rubber. England has a rich history with TT, and there was an abundance of quality coaches back then. My Coach had learned his stuff in the 1960's the birth decade of loop. The whole point of the loop initially was to make the opponent pop the ball up because he could not control the topspin, you then looked for a kill with a flat hit. There was a definite distinction between a loop and a flat hit, loop driving has blended these two strokes together somewhat.  Though I have adapted with the times to a certain extent, the pattern of my structured game remains the same, I go for heavy topsin on the follow up to serve, only these days it is to try and stop my opponent forcing a quick ball on me rather than making the ball pop up, then I look for a closed angle loop drive on the 5th ball instead of a flat kill. I found Super Sriver perfect for making the distinction between pure spin loop, and flat hit, it just felt so crisp, as opposed to mark V, which I believe was the first rubber to allow the spin and pace for loop driving. Crikey, once you start reminiscing