Design
Clear window
Ventana transparente
A clear window is a translucent zone or a cut-out in a polymer or hybrid banknote, often with a silhouette, optical relief, or a metallic element. It is not a paper watermark: it is not formed in the pulp; it is designed into Guardian or another plastic substrate. It is not a cotton window thread either. It lets one see a motif by transmitted light that a photocopy fake does not reproduce, and it can hold an OVD.
The Malaysian RM5 carries at left a window with a rhinoceros-hornbill silhouette, the crescent, and the fourteen-pointed star, serial AA 1955984. The millennium 100-yuan shows the Temple of Heaven in the window, serial J04445744. The England £5 houses Elizabeth Tower in gold inside the window, serial AC04 879241. The Canadian Laurier $5 belongs to the Frontiers series, also with a polymer window, serial HBM0828003. No record invents a printage for those prefixes.
A broken, delaminated, or tape-replaced window is damage, not a design error. This collection shows those examples in sleeves, unslabbed. The term links polymer, Guardian, and OVD. Colombian cotton paper in this case has no window: looking for one is confusing substrates.
Four windows — Malaysia, China, England, Canada — do not licence describing a fifth that this collection has not photographed. Each cited serial already has a record. Cotton paper, watermark, and thread stay in their articles or anchors. Looking for a window on a 1945 peso oro is confusing 1923–1993 with plastic from 2000 onward. The object remains the published serial.
