Unit on left looks to have "ST/121" stamped on one ear and "XO/ML" on the other. Glaze is a brighter white and there are swirl marks in the porcelain from mfr. Unit on right has a bunch of faint incuse marks, I can make out part of "England" in there. $15 each + postage. How about $8 each or $15 for the pair + postage ?