In the 1940's--1950's, Steuben Glass introduced a spectacular series of 10"D. copper wheel engraved plates with each one depicting the exact replica of an Audubon Bird print. The extraordinary detail of the engraving reflects the superior craftsmanship from this era in the history of the company. In total, there were 21 different birds featured in this series. Properly signed and in excellent condition. Note that some of the plates were signed with just the script "S" which is perfectly legitimate and acceptable.