It's an early version New Wonder C-melody (as indicated by the "C" between the two sets of numbers) from 1924. C-melody horns don't have a lot of value in top condition, and this one does not appear to be in top condition.  Unfortunately, a big part of its value is cosmetic condition and that finish looks pretty corroded and worn.  Figure a selling price of$300 or so in good playing condition and deduct the cost of repairs to get it in that condition.