Vintage Yale Skeleton Keys Pair – No. 52 & Y51 Antique Hollow Barrel Keys 🔑 Pair of authentic vintage Yale skeleton keys, including a Yale No. 52 and Yale Y51 key. Both feature the classic hollow barrel design and original aged patina. Both keys show expected wear and oxidation consistent with age, adding to their authentic vintage character. #antique #skeletonkey #yale #1900s #steampunk