Cumberland, Maryland. Chesapeake & Ohio Canal - Geo. G. McPherson. May 1, 1838. 6 ¼ Cents. PCGS About New 50.,KSG 24.9.1. We have seen nice Extremely Fines sell for around $400-$500 each. This is just about the nicest technical grade piece we have noticed and are not sure why the PPQ designation wasnt affixed. Either way, a stellar Maryland obsolete note that should be very well received.