In the 1960's and 1970's, the Model 14 SA and the Model 25 both shipped in a standard 3T configuration. As far as I know, on other revolvers, target hammer/trigger and target grips were an option that one ordered at an extra charge, either instead of, or separately from the base gun.
There were two version of the model 14, the base DA/SA, like all the other guns, and a Single action version, called K-38 Masterpiece Single Action Model 14. In 1961 it cost about $90, compared to $81 for the one without the 3T's. A whopping nine dollar difference (!).
In 1970, the target version of the Model 14 was still listed under the same name, but it was shown in the catalog with SB magnas. The Model 25 was still pictured with the 3Ts including non-diamond target grips with a small football relief. Other N-frames were still pictured with diamond target grips, which is probably why the SCSW 4th edition says that N-frames shipped with diamond grips for another couple years, after diamond grips went away on the K-frame.
By the mid 1970's the Model 27 started shipping with football relief target stocks.
There was also a Model 35, "1953 .22/32 Target", which I don't know much about. It had a 6" barrel, Patridge front sight, adjustable rear sight, caliber .22 lr, magna stocks, and weighed only 25 oz. It was one of the Kit gun series, built first on the improved I frame, and later the J frame, pics on p 242 of the SCSW 4th edition.
...just trying to show I really DO read... well, sometimes, anyway (unless there are too many notes