Sorry, that should have been Meissen. But thanks for sending me to eBay, I found more incl this one. My vase is 8.75" high, the mark I couldn't figure out I think is "slb". This one is from the same maker, obviously a big difference b/t number 21 and number 612, but look at the price! A couple of smaller ones listed too, but I'm not sure sellers know what they have. I emailed all of them, will let you know what responses I get (if any). Last time I emailed ebay sellers looking for info on my great-great-grandpa's Victrola, eBay told me someone was using my email to spam people. Here is a link that might be useful: mPm pottery vase

Artist's name seems to be "Avis". The only Avis, who works with pottery, that came up during my search was Avis Cherichetti, Honey Hill Pottery.

Add me to the list -- blown Mexican glasses. They are more often seen with cobalt or green rims, but I have seen the aqua too. As far as I know, it is unlikely you will find a brand or name to search for -- just the size and color. I had some like those with cobalt rims and some solid cobalt ones.