This antique book titled "The Master Key System" by Charles F. Hannel is a rare find for collectors and enthusiasts alike. Published in 1927 by The Master Key Institute, this book is a valuable addition to any collection of self-help literature. The leather binding and English language make it a durable and readable item.

The book covers a range of topics related to self-help and personal growth, making it a great resource for those interested in improving their mental and emotional well-being. With its unique insights and practical advice, this book is sure to be a valuable addition to any bookshelf.

Edging wear on leather cover. Overall excellent