CREATE TABLE table_34810 ("Year of Issue" FLOAT, "Description" CLOB, "Weight" CLOB, "Diameter" CLOB, "Thickness" CLOB, "Edge" CLOB)

Which Thickness has a Weight of 3.50grams?
SELECT "Thickness" FROM table_34810 WHERE "Weight" = '3.50grams'
SELECT "Thickness" FROM "table_34810" WHERE "Weight" = '3.50grams'