1862 1c Proprietary Medicine Stamp - green
1864 1c Proprietary Match Stamp - Barber Match Co, blue, watermark 191R
1862 2c Proprietary Medicine Stamp - Helmbold's, blue, old paper
400 postally used US stamps, including airmails!
Less than 60¢ per cover.
Neat variety of cork fancy cancels on early US issues.