Tell me the lowest wins for class of 50cc and team of tomos for year less than 1969
CREATE TABLE "motorcycle_grand_prix_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "rank" text,
  "wins" real
);
SELECT MIN("wins") FROM "motorcycle_grand_prix_results" WHERE "class"='50cc' AND "team"='tomos' AND "year"<1969;