DuraNote Predecessor Polymer Banknote Advertising Note Specimens. ND, ca.1980-90's, Lot of 6 different polymer sample notes with different security elements added. All are 100 Denomination notes with oil platform on front and back with oil wagon being pulled by horses, Includes security elements with colorful and ornate designs, 3 with variations of Pegasus and 3 with variations of triangular shapes with "100" on bottom right on the counterfoil margins. Also includes an intaglio printed advertising flier on DuraNote paper by an English printing firm. The notes were part of a project from Mobil Oil for testing petroleum based hydrocarbon polymer paper for printing banknotes. All are in Choice to Gem Uncirculated condition. Scarce and attractive. DuraNote Predecessor Polymer Banknote Advertising Note Specimens. ND, ca.1980-90's, Lot of 6 different polymer sample notes with different security elements added. All are 100 Denomination notes with oil platform on front and back with oil wagon being pulled by horses, Includes security elements with colorful and ornate designs, 3 with variations of Pegasus and 3 with variations of triangular shapes with "100" on bottom right on the counterfoil margins. Also includes an intaglio printed advertising flier on DuraNote paper by an English printing firm. The notes were part of a project from Mobil Oil for testing petroleum based hydrocarbon polymer paper for printing banknotes. All are in Choice to Gem Uncirculated condition. Scarce and attractive.