Hermann Zaiss made a variety of colourful plastic (bakelite?) double edged safety razors. They were apparently sold in Germany and Italy, likely in the 1950's, and under a variety of names: Neo-Ra, Neo-Ras, Neo-Lux, and Neo-Gam. These razors stand out from the pack given their often two-toned colours and pronounced 45 degree angle slant. They're "hard to miss", and there's lots of photos of them around. Reviews vary, some swear by them, others find the angle a bit challenging. Zaiss also made a similar razor, called the Ebor, but that differed from the rest of his product in that the Ebor could be configured as either a slant or just the regular way. (Or, perhaps the Ebor just came "regular"..I'm not entirely sure.) The Ebor seems to have built up a bit of a cult following and is reputed as a great shaver. It's highly sought after. Anyway, this is a long way of saying that I think another razor, the Steiger, made in Switzerland, shown below, appears like a dead ringer, by my eye, for the elusive Ebor. However, I'm not sure there's many of these around either, should one seek a Steiger because the Ebor is too hard to find! I haven't tried it yet so cannot comment on its effectiveness.