BT3 identification?

[seabat]

This may be redundant and a stupid question and probably already answered but I can't find the link.

How can you identify one of these saws?

[LCHIEN]

they have a distinctive look - shape of the base (different bases for BT3000, BT3100, 21829) the rail system, the rip fence handle, the SMT and miter fence and the position/appearance of the elevation crank are all dead giveaways to me. Unique accessories sometimes.
BT3000, BT3100, Sears 22811, Sears 21829 each have distinctive color scheme and artwork on the front.

I can spot one at a pretty good distance and tell by even a small part of the saw.

You can also tell from the label, probably.

Don't forget the big lettering on the front that says BT3000 Precision Woodcutting System.