Bill Cook has already suggested to you that it was a Mk 28 with generic prism plates. It might have been part of a contract cancelled at the end of WWII with the prism plates changed to civilian ones but the Hood case is very U.S. Navy.
I have one, made in 1943. On the starboard prism plate is the Navy inscription in whitened engraving, specifying the model . If memory serves me correctly, in 1985, I spotted Titan with it, a sighting confirmed by the Haydn Planetarium. Although, I could be confusing it with my 7x50 Leitz Marseptit, which I owned at the same time but both are serviceable . It should work best in dark skies but even in light polluted skies, the Galilean moons should be apparent and various asterisms like the Pleiades and Orion's sword will enchant you.
Your Swift Audubon might do better for astronomy but the Mk 28 should be easier to keep steady.
If you are the imaginative type, you might think what it may have been like to use such a glass in a Pacific battle.
Edited by Pinewood, 02 August 2020 - 08:02 PM.