A mint stamp with original gum that has not been mounted or hinged.
The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
The catalogue value quoted from Stanley Gibbons. It is not the same as the UPA auction estimate or a guaranteed selling price.
The rows of holes or cuts between stamps that allow them to be separated; measurements describe the spacing of those perforations.
An abbreviation for watermark: a design or pattern incorporated into the stamp paper during manufacture.
A joined group of stamps, normally arranged in at least two rows and two columns.