Found in CT would like to know anything about it 2 Piece no back mark visible
That crossed my mind as I have found there buttons in the past but there is a lot wrong with this one being made for the military not only the double tail & crown but the quality. Its IMO a sudo-military fashion button, like the Waterbury British example at the above link.Due to showing a "crowned" Rampant Lion (which is a Heraldry term) holding an anchor, it seems to be a Netherlands Royal Navy uniform button. Here's a photo of a pre-World War 2 Netherlands Royal Air Force button. It shows a crowned Rampant Lion holding arrows and a sword. I know of no other country whose emblem shows a crowned Rampant Lion.
I should mention... an 1860s Denmark army officer button and post-1968 Canada army "general service" buttons show a crowned "Lion Passant"... which is another Heraldry term meaning "Lion moving past" (walking)... not a Lion rearing up on its hind legs (Rampant Lion).