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Scott Number: RB11b Collection Reference No. for Communications: 5737

Denomination/Type: Proprietary: 1c green, watermark 191R, perforated

2025 Scott Catalog Value (for a single stamp): $ 0.50

Estimated Retail Value: $ 100.00 What is this?

Cancel Method: Handstamped - Multiple Line

Cancel Color: Magenta/Purple

Cancel or Company Type: Druggist, Pharmacist, or Patent Medicine

Company: World's Central Laboratory

City: Buffalo

State: New York

Extremely rare cancel. Manufacturer of Father Arent's Rheumatic Plaster.

If you have any information or comments about this cancel or stamp, please email me.