While these are certainly not the specialty items the Brothers P produced, back in 1935, Ithaca put out a flyer to their distributors offering a deal on old-style guns from their inventory --
Sept. 1, 1935 --EXTRA PROFIT--.jpeg
Some years ago Walter posted these first two pages of this 1935 invoice for a shipment of 43 cases of 12-gauge, 30-inch, Lefever Nitro Specials to E.K. Tryon. Looking through these invoices I see many 1928 serial numbers.
1935 invoice 01.jpg
1935 invoice 02.jpg