CSN202A3. Rare Backmarked Non Dug Confederate States Navy Coat Button

CSN202A3. Rare backmarked non dug Confederate States Navy coat button. The reverse has a small depressed FIRMIN & SONS. 2 DAWSON. ST. DUBLIN & STRAND LONDON backmark. Tice states there is only one button known with this backmark. Here it is. The shank is straight. Measures just under 22.5 mm's in diameter. It hasn't been cleaned. A quick scrub with lemon juice would shine it right up. $2595