One guy thought possibly Grueby the other said possibly European. Because of the metal base I think they are likely American.The glaze is very similar to Fulper cats eye flambé. I think from what I find they look an awful lot like Grueby pottery on the base of the lamps. I have not been able to find anything exactly like them and they are not marked. They seem to be more blue gray than green. They have a metal base that has MMM in a diamond shape with the number 804 on the base.
They stand about 10 inches tall from base to the top of the pottery the pottery part is about 9 tall. About 21 tall in all. Look at all the pictures.