519  (500 Series)   Large vase.   

Does this shape appear in other series?  Probably yes, but we don't know what shape it is.
Only one size is known, but the use of the size suffix 12 suggests that other sizes may exist.

   Height; from inch suffix, approximately 30 cm

A contributor has sent a clear base pic incised Remued 519/12, but no other pic as yet.
No other example is known.