The prefix was then changed to SDLxxx up to SDUxxx and designated as a 44B model. The original Omark Mod 44 started off with serial Nos at DA XXX and continued for a number of years up to DLxxx. EG: DGXXX3 letters and 3 numbers are the 44B model. 2 letters and 3 numbers are the older 44 models. Look for a 44B over the older 44.The newer model 44B had the upgraded trigger, large bolt head pin, heavier barrel, wider forestock etc.Serial numbers tell the models apart.
