Lot
2311 
1987, 22¢ Black-tailed Prairie Dog, red omitted, from the North American Wildlife se-tenant sheet of 50, right margin single, o.g., never hinged, Very Fine, unique as only one se-tenant sheet of 50 was ever discovered; with 1992 P.F. certificate. Scott No. 2325b $2,500.
Realized: $1,150