I bid for and won one coin in the Naville auction.
It is a quinarius of Cato the Younger from the E.E. Clain Stefanelli Collection. I wanted this coin because I already have the Clain-Steffanelli Denarius of Cato the younger. I have always wanted the quinarius but never thought for a moment that I could get one which was from the same collection as the denarius.
I am very happy to have them both.
Please post your coins of Cato.
M. Porcius Cato. Quinarius Africa 47-46, AR 13.5mm., 1.94g. Ivy-wreathed head of Liber r.; below, [M·CATO·PR]O·PR. Rev. Rev. Victory seated r., holding patera; in exergue, VICTRIX. Babelon Porcia 11. Sydenham 1054. Sear Imperators 47. RBW -. Crawford 462/2.
Old cabinet tone, Very Fine.
From the E.E. Clain-Stefanelli collection.

Here is the Denarius I already had.
M. Porcius Cato.AR Denarius Africa 47-46 BCE
(18mm., 3.57g).
Obv: M CATO PRO PR Draped female bust r.
Rev: Victory seated r., holding patera.
Babelon Porcia 9. Sydenham 1052. Sear Imperators 46. RBW -. Crawford 462/1c. SRCV 1 (2000) 1381.
From the E.E. Clain Stefanelli collection.
Naville Numismatics 29 February 26 2017 Lot # 560

On another note I have been in Dublin for a few days. Unfortunately I did not find any coin shops. I am hoping to have better luck in Munich over the next few days.