Antique Large bronze Oval belt buckle,nice patina.

Antique Large bronze Oval belt buckle.,nice patina.It could be 200 years old. Measures about 3 1/2" x 3 1/4". I was told that this buckle was dug up in the field where used to be an old Dutch settlement in Hinsdale Ma. Excellent condition.$50 plus shipping. I need to know the zipcode to estimate shipping cost.