https://www.fieldandstream.com/an-auto-5-that-has-us-stumped

Today’s Blast From the Past is a rarely-seen version of one of the best-known shotguns of all time: the Browning Auto 5. Until 1940, Browning customers in the U.S. could choose among four grades of Auto 5s, from the plain, unadorned Grade 1 up to the gold-inlaid Grade 4. Those guns, plus a couple of other grades, were available in other parts of the world until the 1970s. Today’s gun is a Grade 3 and is richly decorated with game scenes featuring setters.
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Browning-Auto-5-Sweet-16
https://www.fieldandstream.com/blast-from-past-browning-auto-5-sweet-16