1873 Trade Dollar Simpson Short Set

jperinotti

I am trying to do some research on the Trade Dollar. I possess what seems like a 1873 Simpson Trade Dollar from the short set collection. (1873 T$1 J-1315). Can anyone tell me if this coin is legitimate and what the value may be. All the markings are exact as they are in the collection on this site. However, I am not sure what the proper weight is for this coin. Mine appears to weigh about 25.5 grams.