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 75 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 stamp from the 1901-1940 era in mint never hinged quality. It is issued in the 637 block with a fine grade. The stamp is not certified but is in excellent condition for collectors looking to complete their unused stamp collection from that time period.