The product is a 1604 4 Maravedis Spanish Colonial old coin from the Segovia Mint with a counterstamp. This coin was minted in Spain during the Spanish Colonial period and features the unique Maravedí denomination. While it is uncertified, it holds historical value and is a collectible piece for numismatists interested in Spanish coins from that era. The counterstamp adds an additional layer of interest to this particular coin, making it a unique and sought-after piece for coin collectors.