That alone points to it being old.
Suggest you take a look at this thread at Taurusarmed.com:
Tip for Dating Taurus Revolvers.
Model 85, 5 shot .38, buy one for a 5 shot S&W J-frame or Ruger SP101.
If it's a 6 shot .38, go with one for a 6 shot S&W K frame, a model 10 or 19.