vintage 800 silver enamel bird pin

This precious little pin was made sometime after WW11. It measures 1 14/" L X 1 3/4" H. Stamped on the back 800 for 800/1000 silver purity. It has delicate filigree work with enamel paint in shades of blue, green and a little bit of purple. It looks like work by Alioto Adrian from Italy but the stamp on the back is impossible for me to make out. I've seen his other bird pins but this is the only one I've see that is carrying a letter. Considering it's age I would say it's in very good condition. There is a fair amount of tarnish and a couple spots of enamel loose. The stick pin on the back is slightly bent but closes just fine. I ship same or next business day.