Coin Silver Shellback Spoon by J. K. McDonald - Location?

Offered is a nice shellback coin silver silver spoon marked with probably New York manufacturing marks, and the name of the retailer, one J.K. McDonald. This person was probably in New York, but I'm not completely sure. This spoon has legible marks and a period engraved monogram. It measures about 6 1/8 inches in length and weighs about 19 grams. Condition is fair, with a fair amount of wear and some small dings here and there, but no splits or repairs. All in all a nice coin silver spoon!