silver thistle button

[leslie(nova scotia)]

From the land of the Bluenose.....believe and can stand to be corrected that this silver button was off a military blazer as it was dug years ago at a place called Devil's Hill Battery where many military relics where unearthed. Is a one piece item with a hook on back. Tough spot to dig however and about due to go back. Any info on the item would be appreciated and have a great day.
http://img.photobucket.com/albums/v518/leslie19/007-7.jpg (http://smg.photobucket.com/user/leslie19/media/007-7.jpg.html) <;)