The product is a rare collection of Australian stamps from the Commonwealth of Australia, specifically from the years 1937 to 1950. The stamps range in value from one shilling to five shillings & 9 pence, adding to the uniqueness and potential rarity of the collection. This historical item offers a glimpse into the past, showcasing the art and designs of Australian currency during that time period, making it a valuable addition to any stamp collector's assortment.