Here is a magnificent block of 4 10c green Special Delivery Stamps issued in 1946 in the reign of King George VI. The stamps are fresh, bright, perfectly centred and mint never hinged. The book value of the stamps is $30.
I combine shipping: After the first purchase, I add 50c to each additional purchase if completed within a week of the first purchase. After you have completed your purchases, ask the seller to send you a combined shipping invoice to substantially reduce your shipping cost. Make sure to pay the seller’s combined shipping invoice to receive the shipping discount. Do not pay the automated eBay invoice which does not reduce the shipping cost.