Right eyepiece is a little loose. 380ft X 1000yds.
Rare Binoculars
Vintage and Classic Binoculars discussion part III - Page 135 - Binoculars - Cloudy Nights
Wide Angle Binoculars
Vintage Occupied Japan RIKEN KOGAKUS 6X15 Mini Spy Binoculars RKK Opera Glasses
They were made in occupied Japan, No. 5929, Jupiter, Jr 6 X 15. they are 3.5 across & 1 wide x 2, the sights are adjustable, you can still read the
VINTAGE OPERA GLASSES Jupiter Jr Prism Binoculars - 6 x 15 - # 5929, with case
7x50 binoculars
Vintage Collapsible Folding Travel Sport Pocket Binoculars Opera Glasses 3.5x30
Wide Angle Binoculars