Bundleware

thumb | right | alt=Bundlewared old postage stamps of India. | Bundlewared old postage stamps of India. Kiloware is a term for postage stamps sold to stamp collectors by weight rather than individually or by quantity. This is often in kilograms, hence the name. Kiloware usually consists of used stamps on paper from mail clippings, although off paper stamps may also be sold as kiloware.

Mission kiloware, or a mission mixture, is kiloware put together by charitable organizations, churches, etc., whose volunteers gather used stamps and then sell them to dealers or collectors. Mission kiloware will normally have high duplication of common letter rate definitives, but good mission kiloware will be advertised as "unpicked", meaning the scarcer or better stamps will not have been removed from the mix, and there is at least the possibility of the collector finding good stamps for a low price.