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Scott Number: R18c Collection Reference No. for Communications: 3582
Denomination/Type: 3c Proprietary, green, perforated
2020 Scott Catalog Value (for a single stamp): $ 9.00
Estimated Retail Value: $ 50.00 What is this?
Cancel Method: Handstamped - Circle
Cancel Color: Blue
Cancel or Company Type: Druggist/Pharmacist/Patent Medicine
Company: Lamplough & Campbell
Very rare to find a U.S. revenue stamp with a Canadian cancel. The company must have been selling merchandise in the U.S.
If you have any information or comments about this cancel or stamp, please email me.