Fine Coin Silver Spoon Circa 1780-90 Marked B:D - Benjamin Drowne?

Offered is an interesting early American 18th Century coin silver teaspoon circa the 1780s, markd B:D, perhaps for Benjamin Drowne of Portsmouth, New Hampshire. This piece measures about 4 1/2 inches in length and weighs about 9 grams. It is engraved with a period set of initials and is well-struck with a clear maker's mark of "B:D". Condition is excellent for its age, with no damage or repairs, and minimal wear. All in all a superb early American silver spoon!