The product is a used 1840 Penny Black stamp from Plate 10, featuring the initials I-L and 4 margins. This line-engraved issue stamp is black in colour and bears a handstamped cancellation. With a denomination of 1d, it originates from the United Kingdom during the reign of Queen Victoria (1837-1901). It is a valuable piece of philatelic history, specifically highlighting royalty and the early days of postal currency in Great Britain.
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