MULLER PERAZZI 18.7 12 GAUGE FEATHERLITE COMPETITION CHOKE TUBE USED FOR PERAZZI 18.7 BORE (.736)

I have three Muller Featherlite Competition Chokes for a Perazzi 18.7 barrel.   I have U0, U1, U3.   These did not see much use since I always used U2 for both barrels.  Sold the gun with the U2 chokes  and was left with these three.