Button ID - CW navy?........

[Mike from MI]

Can't find this one in my book? Notice the crossbar on the anchor is straight not angled.
Cuff size, the back is gone.

 

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[romeo-1]

Most likely a civilian blazer button, iron back would have rusted away...wag.

 

[vayank54]

Most likely a civilian blazer button, iron back would have rusted away...wag.

Yep. a few ways to tell is the lack of detail, the goofy eagle and the large ring at the end of the anchor

 

[CRUSADER]

double yep

 

[ShootTheMoon]

It's vintage, but more of a replica of navy uniform buttons.

Got to love etsy

http://www.etsy.com/listing/38167586/vintage-metal-eagle-anchor-13-star