I saved a picture of an October 17, 1942, Ithaca invoice, that Walter posted some years ago, for four fully loaded No. 4E double traps and two similar No. 5Es to Lou J. Eppinger, Inc. One gun had a serial number in the 448xxx range, four had serial numbers in the 454xxx range and one in the 457xxx range. By the serial number chronology in Walter's book those would be 1927 to 1930 guns.
Similarly Walter posted a couple pages of 1935 Lefever Arms Co., Inc. invoices for 250 and 430 12-gauge, 30-inch, Nitro Specials to Edw. K. Tryon. All the serial numbers in the 1927-29 range. Apparently the boys at Fall Creek had a lot of inventory to move.