The light , moderate and heavy sets contained different razors which looked and performed differently. Blue tip/knob was the mildest, moderate was medium mild and red tip/knob least mild. The red and blue tip razors were only sold in these sets, the moderate one which has silver looking (nickel plated) knob on the handle was sold in other sets.
Thanks. I see the difference now that I look closer at the ad. So which do you think this might be. I have this one too, not yet with me, waiting for collection as its 41/2 hours away at a friends home.
That would be the moderate or standard style flare tip Super Speed. They call it a flare tip because the knob is flared on the handle.