We will always combine shipping. If items are on sale, we will need to refund you within 24 hours. Shipping policy for domestic small items: The highest shipping plus 85 cents per lot. Larger domestic shipping items are the highest shipping plus $1.00 shipping. Large albums and heavier items vary. The product is a United States postage due stamp, cataloged as J1, in very fine used condition with a very light cancellation. This stamp originates from the United States and has not been certified. It falls under the category of United States back of book stamps and is a valuable addition for collectors interested in US postage dues.