Secret Fold-Up Cylinder Binoculars , 1880's 1890s
These secret binoculars folded up into a cylinder that might look like a coin holder or eyeglass case. They were called Optical Binoculars and made in France. The Binoculars measure approx. 4.5" x 1.3/8th inch diameter when closed. You can understand how popular they were since they were covert in nature until you had to use them. Really something and highly unique for it's time.

From The Ralph D. Thomas PI Vintage Collection
THOMAS INVESTIGATIE PUBLICATIONS, INC.
NATIONAL ASSOCIATION OF INVESTIGATIVE SPECIALISTS, INC.
SPY EXCHANGE AND SECURITY CENTER
P O Box 82148, Austin, Texas 78708
Showroom: 9513 Burnet Road, Austin, Texas 78758
Phone 512.719.3595 Fax 512.719.3594
Email: RThomas007@aol.com

Copyright: 2006, Thomas Investigative Publications, Inc. All rights reserved.
Thomas Investigative Publications, Trademark, 1981.
National Association Of Investigative Specialists, Inc, Trademark, 1986.
Spy Exchange, Trademark, 1999