Carter carb

D669A9F7-31C5-4CBD-9ADF-3123F607FB83.jpeg Any idea what this brass tag is for also I am guessing if I get a rebuild kit it should be for carter 0-2258 ? Any recommendations on a place to get a good kit?1292897A-1331-42F5-B0E9-162FE4DEA80F.jpeg