1939 DeLuxe with a flat rib Archived Message Posted by Drew Hause on November 3, 2018, 5:11 pm, in reply to "Flat or concave rib on SSP" Message Thread: Flat or concave rib - Drew Hause November 3, 2018, 4:37 pm Re: Flat or concave rib - Drew Hause November 3, 2018, 4:52 pm Flat or concave rib on SSP - Drew Hause November 3, 2018, 4:57 pm 1939 DeLuxe with a flat rib - Drew Hause November 3, 2018, 5:11 pm More ribs - Drew Hause November 4, 2018, 3:35 pm Barrel Markings as a Means of Determining Originality - Tom Breeden March 2, 2019, 1:24 pm Standard Option Symbol - Drew Hause November 4, 2018, 4:34 pm Re: Standard Option Symbol - Michael Harris November 5, 2018, 12:41 pm   Searching