Dull black subdued Marine Corps buttons in Excellent condition. The larger size at one inch is slightly smaller than most used for the front so they are ideal for a small size coat. You get four of those and six small (5/8") for the pockets and epaulets. They are all the same manufacturer (not marked) and are a good matched set.

Ideal for new service wear or restoring a vintage jacket. I don't know how old they are, I think seventies is not a bad guess but I wouldn't make it odds-on. I could not get any better photos no matter what I tried but that doesn't make the buttons any less quality.