surcharge for War Refugees- 5 fils

Issued during the period of the State of Bahrain, this stamp belongs to a series of postage due stamps, which were used by postal authorities to collect additional charges on mail that had been sent with insufficient postage. Such stamps formed an important part of postal operations, ensuring that underpaid items could continue through the mail system while allowing the postal service to recover the missing fees from the recipient.

The issue reflects the development and administration of Bahrain’s postal system during the twentieth century, when efficient mail services were increasingly important for government, business, and personal communication. Postage due stamps served a practical purpose in maintaining the smooth functioning of postal networks and enforcing postal regulations while facilitating the delivery of correspondence.