Glad you found the proper information. I have to call every time I buy a Taurus to find the date of manufacture. Newer guns are not on their look-up site. ( http://www.taurususa.com/products/findmodel.cfm ) It doesn't seemed to be updated very often.Yours may be old enough to have the info. on the site.
Strange, I entered both serial numbers from my 651 and M44 and it said it couldn't locate them. I have bought both of these fairly recently; will have to plug in the info from my 608 later as I have had it much longer.