Nice looking Omega movement in running shape. Note for accurate time keeping service is always recommended for mechanical timepiece. The case and back are not Omega in my opinion. They seem to be too cheesy for omega but the movement and dial are Omega indefinitely. The dial has most likely mlbeen refinished but can't say for sure. It is missing the original crown but the one on it works and looks good on the case. It has 18mm lug spacing for band. The watch case is 36mm and 43mm lug to lug 37mm on the crown. The crystal looks okay is not Omega and isn't fit perfect as it can spun in the bezel. Doesn't affect it and doesn't fall out or move on its own. Please feel free to contact me with any questions