Postage Stamps
'Unknown' 1922 Malta stamp auctions for $1,490
A previously unknown 1922 Malta 10 shilling stamp has sold in the UK
Unknown Malta 10 shilling stamp to auction with $1,600 estimate
The Malta 10 shilling stamp features an unknown reversed watermark and overprint combination
'Unknown' Columbian Blue Error plate block sells in US stamp auction
Mistakenly printed with blue ink, this is the largest known multiple and only plate block of its kind...
