Titus Welliver wears Randolph Engineering Aviator or American Optical sunglasses in several seasons of Amazon tv series Bosch (2015-2021).

Welliver wears the Aviator model with gold frame. It's hard to see which color lenses are in the frame, it looks most like AGX lenses, but could be grey as well. This model sunglasses can be recognized by their bayonet temples, that are designed to fit comfortably under headgear.

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Different special editions, sizes, colors and temple styles are available at Randolph.

Randolph is an independent, authentic American eyewear brand since 1973. Randolph sunglasses, designed and handcrafted in Randolph, MA, can often be spotted in films and tv series.

In the spin-off series Bosch: Legacy, Bosch wears Persol 3048 sunglasses and again the Randolph or American Optical bayonet Aviators.

Reference: Randolph Engineering Aviator, gold frame

Thanks to JW for the ID