Anyway, the point was a canti hanger and a disc tab is rare enough it was pointed out in the first post by a person who buys and sells bike parts and sees these pass through a lot.
They where made for the 1998 model, it was an option for the XC and SL in the various colours they came in (SL yellow or Cream, XC...).
You normally see the hanger on the 1997 forks because Vs hadn't fully dominated by then mainly as they had just been released. All main groupset had only just been given a Vbrake in 97 (96 only XTR/XT had them). So no disc tab, just like the recycle shop linked, because disc hadn't become a real option by then.
98 like I mentioned V dominated, disc tabs probably came along from the likes of Bombers etc pushing them.
(By then being the year or two before hand in development).
I actually don't know the disc history and progression at the time for forks makers and bike to suddenly provide it as an option. Most people still didn't use them, but the rate V style brakes took over was pretty rapid by anyone's terms.
In reality a disc tab should be the rarer option.
As for the crown, it is possible the old was cut off and replaced because they wanted a 1" long steerer (for a PACE maybe) or it is a blend of and XC which did have that as an option.
I wouldn't think most would spray and sticker up as SLs, seem more work then it's worth. But who knows.
Either way, a nice and interesting find. Particularly to show how quickly Vs changed the brake market and hence frame and fork design.