This set of four vintage DEAN MARKLEY guitar strings is a great addition to any musician's collection. The strings are made of nickel-plated steel and come in a set with a string gauge that can be seen in the pictures. The brand is well-known and the strings are suitable for both acoustic and electric guitars. The winding of the strings is unknown, but the country of manufacture is the United States. The guitar string coating is also unknown, but the quality of the strings is undeniable. This set is perfect for anyone looking for a unique and high-quality sound.