CREATE TABLE table_31757 ("Year" FLOAT, "Class" TEXT, "Team" TEXT, "Points" FLOAT, "Rank" TEXT, "Wins" FLOAT)

Tell me the lowest wins for class of 50cc and team of tomos for year less than 1969
SELECT MIN("Wins") FROM table_31757 WHERE "Class" = '50cc' AND "Team" = 'tomos' AND "Year" < '1969'
SELECT MIN("Wins") FROM "table_31757" WHERE "Class" = '50cc' AND "Team" = 'tomos' AND "Year" < '1969'