When were they made? 1920-30s? 1950-60s?
And where? Beijing? Tianjin? Somewhere else?
UPDATE: Another three-dragon vase was discovered by an eBay vendor. See August 17, 2015 post for more pictures. This vase has what is likely a pre-1950 country of origin stamp.
UPDATE: Two more examples have turned up:
Another figural jar from private collection of E.N.