Tricky.  It's Asia or Mexico.
 
	That base is fairly clear.  Nearly crystal clear.  Maybe a tinge of gray but no bottle green.  
 
	A clear base either suggests "early" Asia or modern Mexico.  "Early" Asia increases the likelihood of them being from Japan.
 
	Would be good to see the marbles from the top so I could see all the vanes and how crisp they are.  
 
	I'm so much on the fence, that I probably need to get my cats out and see just how crystal clear the Mexican bases are compared to these (because I remember them as being  very clear).
 
	 
 
	 
 
	And Ann has answered while I was dithering.  *loading her answer*.  Yes,  I like her answer.