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Found in good condition. Over the Columbus weekend I headed up to northern New Hampshire for some hiking, benchmarking and a bit of sight seeing. All the recovered marks (and all but one of the Not Founds) were boundary markers of one sort or another. Some were state boundary markers, some were US-Canada boundary markers and some were IBC triangulation stations (used when the US-Canada border was surveyed in 1915-1916). Here's a trip report: (visit link)
And here's a set of photo albums: (visit link) This mark is a triangulation station disk set in a boulder on the boundary line at the highest point of Salmon Mountain. I bushwhacked up to this peak about a mile from a logging road which runs west and south off of East Inlet Road in Pittsburg, NH. Once I reached the boundary vista near the peak, I turned and walked the 100 or so yards to the highest point and saw the boulder just to the east (left) of the line with the disk showing clearly. Behind it on the US side was a small hunting blind. Like all the triangulation disks set in the 1915-16 survey, it is a 2 inch brass disk emmbosed "U.S.&C.B.SURVEY" and is otherwise unstamped. The disk was in excellent condition. Logged with the NGS as "Recovered, good condition" on 10/12/2006
Photos:
 QH0550 "SALMON IBC", Pittsburg, NH
View of the top of the peak from the vista. The mark is in front of the hunting blind.
QH0550 "SALMON IBC", Pittsburg, NH
View of the hunting blind with the mark on the boundary line in front.
QH0550 "SALMON IBC", Pittsburg, NH
QH0550 "SALMON IBC", Pittsburg, NH
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