Giant Incubator Trick. Hamburg: Carl Willmann, ca. 1885. A quantity of silk handkerchiefs, colored balls, eggs, or other objects are dropped into an empty canister, and the lid is clamped on. Moments later, the canister is reopened after a period of ?incubation? has passed; three large brass cages with live birds inside have appeared in the place of the balls. Height 21 ?", width 10 ?". Wear to paint and rust to portions of handles and lids, but still an exceedingly handsome oversized model of this classic prop from magic?s golden age.