TDC means "thin dense chrome" in the Bearing industry. It's a commercial name for the "Armaloy" process. Don't know if it's seen much now-a-days but back some years it was a fantastic way to improve upon stainless steel since it was not only impervious to chemicals and corrosion. It also...
For many years I used a Tyler grip adapter on the standard grips and this filled my hand just fine. Then I discovered the Hogue grips and found them to do everything better. I have mounted Hogue soft grips on many of my Smiths including J and N frame guns. They just work great. If you try them...
I've always been partial to the older Smith's. That being said, all Smith's are not equal, as you have noticed. I have owned a number of K-frame Smith's and they have always exhibited excellent quality. Then I purchased a model 48 made in 1980. Until you look close, it looks real nice. Up close...
I bought my first J frame some thirty years ago. I hated it so much I have bought another seven or eight since. I would still like to find one with a four inch barrel in 22 magnum.
I started each of my three younguns on Smith 22 revolvers. I gave my oldest boy a pair of K frame Mod 15 & 18. My second boy got a pair of J frame Model 63 & 36. And my daughter got a pair of 32's Model 30 & 16. All three are grown now and have added extensively to their collections.
I purchased a model 48-4 last month in about 98% condition here in N GA for $629. This was without the box and I was still happy to get it for this price.