Miniature sheet

They may be either regular issues that just happen to be printed in small groups (typical of many early stamps), or special issues often commemorating some event, such as a national anniversary, philatelic exhibition, or government program.

The margins or selvage of the sheet may have additional printing, ranging from a simple statement of the occasion being commemorated, up to a full picture of which the stamp(s) are just a small part.

The margins of the sheet may have ornamental designs, price, emblems and logo(s) which are not part of stamp(s).

Both the stamps and the entire sheet are valid for mailing, although they are almost always sold above face value and kept in mint collection by collectors; a handful of usages may be found as philatelic covers.

While some of the earliest souvenir sheets are valuable (for instance in excellent condition the US White Plains sheet of 1926 is worth hundreds of dollars), modern ones are typically produced in considerable quantities and have no special value.