Unfortunately, I am unable to tell you fitment based on year and caliber. There should be markings for the serial number and model on the frame to help you identify it. If it does not have the model number, I would suggest contacting Taurus with the serial number and they may be able to identify the model based off the serial.
These are the firearms this laser will fit:
Fits Taurus Small Frame Revolvers (85*, 94, 605, 650, 651, 731, 850, 851, 856, 905, 941). Does not fit Taurus Small Frame Revolvers with Polymer Frame). *Does NOT fit Taurus 85 models manufactured after 2014.