Help with identifying and adding a Venetian coin [решено]

I have found the following Venetian coin that I do not believe is in the Numista database. I believe it is the last pictured coin in the first section on this page, for Doge Marcantonio Giustinian: http://www.ancientresource.com/lots/venice/venetian.html

I have not created a Numista page before - can someone guide me through the process? I assume I need a catalog reference for the coin. Does anyone have the appropriate catalog (Paolucci?) and can help me find the correct and accepted specifications for the coin?

My coin is 20.5 to 20.9 mm in diameter and 0.6 mm in thickness.
The weight is 1.32 grams.

Also, can anyone offer an estimate of value?

Thanks!

Yes, you should get catalog reference, but really, you have the coin in hand and you can just link to that website in the references section and you should be fine, after all, the coin already is in the catalog, just not that doge.
Loruca