1940s Frnava Venus-150 Stainless Steel 34mm Clamshell Chronograph Tropical Dial

Manufactured in the 1940's "FRNAVA" ss 34mm clamshell chronograph with famous Venus 150 rare tropical dial. It has a rare 4-screw early type waterproof case called clamshell. The dial is a multi-scale design with a red telemeter and red snail tachymeter on the outer perimeter, and the dial has a taste that has changed from silver to yellow color over time. The dial is a multi-scale design with a red telemeter and red snail tachymeter on the periphery. There are Garrett and Harvard with the same dial design and the same quality, but they are rare models that are rarely seen outside of these two companies.