Actually Keith, If I remember correctly your VPI HW-19 is a Mk.2 (I sold it to you, and mounted your Moerch arm on it.
). The original HW-19 ("Mk.1") had a textured fibreboard top plinth and an aluminum platter, the Mk.2 an acrylic plinth and a black Delrin platter. If the label on the back of the table’s base doesn’t identify it as a Mk.2, a former owner (not I 
) may have updated the Mk.1 with the MK.2 plinth and platter, a very common move by VPI owners. Or maybe VPI sent out some Mk.2’s before they had new labels made.
How are the Magnepan LRS working out for you? That is one beautiful house you have, and a great dedicated basement listening room!---Eric.