Imperforate
Manual separation; margins become part of inspection.
Type Atlas
Stamp type atlas
Browse by construction and issue context. Filters narrow what is visible; they do not guess missing attributes.
Perforated
Punched holes create separable teeth; gauge may distinguish issues.
Self-adhesive
Pressure-sensitive adhesive with release backing and die-cut separation.
Coil stamp
Issued in a roll for sequential dispensing; separation varies by issue.
Booklet stamp
Issued in a compact pane or backed booklet format.
Definitive
A general-use issue category, often part of a continuing series.
Commemorative
An issue focused on a particular subject, event, anniversary or theme.
Used on cover
The stamp remains with the envelope/card and its postal markings.
No records match both filters. Reset one filter to broaden the atlas.
Interpretive boundary
Type labels can describe different dimensions.
“Perforated” describes separation; “coil” describes issue format; “commemorative” describes issue role; “used on cover” describes surviving context. They are not mutually exclusive taxonomic siblings.
The atlas intentionally exposes overlapping dimensions instead of flattening them into one fake master hierarchy.