Uno Zaccagnini Pheasant?

I found a pair of these pheasants at the thrift store. They look almost identical to some that I have found online but all the others are painted. Are these legit? Are unpainted more or less rare?

 

The mark looks good to me, but I'm not all that up on Italian potteries. Is the pair you found the same size as the painted ones you searched? Do they have the same molding and shape? They may have been produced painted and unpainted for buyer's choice.