That is some beautiful work from the folks at Fall Creek Water Power Lot No. 6, Stan. Some of those early Crass guns marked 4 are so far beyond what became the No. 4 as Ithaca grading settled out in the later hammerless models. A No. 4E from about 60 years later --
467653 01 Ithaca NID Grade 4E 16-Gauge 26-inch.jpg