Here are some Canadian examples of the the 1994 project by Mobil Oil for testing petroleum based hydrocarbon polymer paper for printing banknotes.
Only one type of test was done for the $50 Bird note while multiple different examples were done for the $20 Bird note.
« Last Edit: August 31, 2025, 05:45:49 pm by canada-banknotes »

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Arthur Richards
Contributor, Charlton Catalogue of Canadian Government Paper Money, 19th, 20th, 21st, 22nd and 29th Edition
Pricing Panel Member, Charlton Catalogue of Canadian Government Paper Money, 21st Edition 2009