The case backing is hard to screw on and off. Not sure if it's because of the tube or watch. The bezel rotates on the case. Sold as seen for parts repairs.
Acrylic Crystal Glass Fits Vintage Orient King Diver
Vintage Caravelle Devil Diver 'B146' Bezel & Insert FOR 2876/3026/3286 CASES
Technos Watch Movement 15 Jewels Swiss Manual Wind Vintage Parts Repair 19.6mm
Cupillard cup 233 60 dial sky dial diving watch VINTAGE dial 29.9mm dial
VINTAGE CVR Orange CRC 860 Dial SKIN Diver Diving Dial 28mm
Vintage CRC 860 SKIN Diver Diving Dial Matte Black Dial 27.9mm