Postage stamps bought by weight, rather than numerical quantity, and commonly still on paper.(noun)
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Use "kiloware" in a sentence
"Usually, organizations and offices that receive huge amounts of mail from all over the world sell the stamps in bulk, known to stamp collectors as kiloware."
"Eastern Europe 1/2 lb 224 grams kiloware on paper Free Postage - 12.95 GBP"
"A full 1/4 lb of Eastern European kiloware on paper."