Here are a pair of sterling sliver Captain's bars from the world war II era.
They have very light wear and a significant amount of tarnish which could be easily cleaned off it you wanted to.
I would consider these to be in excellent condition.
The Captian's bars have a horizontal pin with a come-under locking swivel catch.
They are approximately 1" x 1" and they are marked sterling on the bar on the left at the bottom. The sterling is more visible on the one on the left in my picture of the back of the pair of bars.
Please ask any questions you might have. I will be glad to answer them.
Thank you for looking.