The product is a 1978 postage stamp from Oman, featuring a surcharge of 40b on the 1975 National Day 150b stamp. This multi-color stamp is used and has a catalog value of $450. It was issued in the 1970s and reflects the country's history and communication themes. The stamp is from Oman and is uncertified, adding to its collectible value for enthusiasts of Middle Eastern philately.