A scarce early 19th c. wooden piptch pipe in as descended surface.
Constructed of a pine wood body of 1/4" thick pine wood and glued with butt joints, the frontal body being decoratively shaped with a semicurve end. 
A pine wood plunger rides horizontally amongst the interior with the depth determining the desired note. "G-F" are hand written in ink script atop the plunger. 
These were used to denote the starting pitch of  a choir for church services. A closely related example is featured in "New England Meeting House and Church: 1630-1850" plate 191. 
Remains in a very well preserved state of condition with a period brass pull and retains an extremely fine surface. After 200+ years, this pitch pipe is still somewhat functional, an attest at quality craftsmanship. A scarcity amongst early treen pieces. 
New England, likely Massachusetts in origin. Ca. 1805. 6 1/4"L x 3"T x 1"Thick.