Welcome to the Forum. The reason why we need additional information is that there are several models in 44 caliber that each start with serial number "1". The Model 3, 44 American, 1st Model, three different Model 3, 44 Russians, New Model 3 in 44 rimfire, 44 American, and 44 Russian, 44 Double Action, 1st Model in 44 Russian and 44-40 and a few more. All these models would have a serial number 881.
Hope you come back with info and pictures.