MacKay1868 patent eggbeater mixer beater archimedes

Unmarked archimedes, no. I.D., but the very hard-to-find D.D. MacKay 1868 patent beater. 11 3/4 inches high. Shows age discoloration and solder wear but works great. See The Eggbeater Chronicles Fig. 12-4.I ACCEPT PAYPAL ONLY