Avocet's (Japanese-sourced) slick clincher tires were the best on the market for years...people still look for (and ride on) old ones.
the pedals were horrible, but that was Ofmega's fault. Avocet had a strong link to the Palo Alto Bicycle shop, but either was not quite a house brand or soon split off going independent as they grew.
That Sampson crank sure looks suspiciously like a Topline in how the spider mounts...any known connection? Sampson also was one of the early makers of clipless pedals (after Look invented them): I had a pair and swore off clipless for years as a result.