The US Marines have a famous globe, anchor, and eagle image.
They state this is their trademark, so using that image wihout their consent is illegal.
It is my belief that the image is subject to copyright, not trademark.
(it looks to me like a work of art, not a logo)
And, since it created and published prior to 1923, it is the public domain if it's a copyright.
If its important, this image does not have any text (Marine Corps, etc) in it.
I would appreciate opinions on if the image I speak of is actually a trademark or copyright.