This vintage Armstrong's DP1 54 56 glass insulator is a true gem for collectors. Made in the United States, it boasts a beautiful wire design and clear glass that will surely catch the eye of anyone who sees it. Its unique features include a modified design and glass insulation, making it a rare find for those interested in vintage insulators. Whether you're a collector or just looking for a unique piece to add to your home, this insulator is sure to impress.