Here's a restaurant postcard I picked up today. I especially like the VJ Day 1945 mentioned on back.

I always like dug stuff----I always wonder how it got there and who dropped it 

Great Patch !

It is always great to find  photo with history

God bless those boys ... will we ever know the truth?

They sure aren't EASILY USABLE unless you're a whiz with trigonometry for actual usage they have to be calibrated periodically (every 2 years?).  Had many over the years and always enjoy seeing those vintage gems; but as I understand it, they were limited issue to only sea going commissioned vessels.  Hope you enjoy!  I'm a potential buyer if you decide to post it 😆

Just so everyone’s clear on the eagle direction, the original design looked like this:   You can see at a glance that they’ve changed the direction of the eagle. Note, however that the eagle has only changed to match the buttons of the time: Original 1852 regs Illustration for the 1886 regs (Plate VII):   You can see here a representation of a typical post-WWII sword here: You can see they accidentally have returned to the original design on the direction of the eagle.   Now there’s another thing that argues for the pre-WWII date of your sword and that’s the curvature of the blade. As you can see from the illustration from the 1951-1960 regs: We don’t know exactly when it became part of the specs to have a straight blade but the 1922 regs updated through 1933 show a curved blade:   I haven’t seen a wholly unmodified set of 1941 regs to compare illustrations (the online versions are revised ones where pages were manually discarded in favor of new packets including illustrations), and the sword wasn’t mandatory for the entire duration of the War and some years afterwards. Regardless, yours is curving and so definitely not post-WWII.  

What I was able to find on the internet, it appears they were on all us navy ships..  also seems that they are somewhat collectible…  

Here is one I picked  sadly not named. With ARCOM