So, this 'ere plane then. Colloquially known as an "infill" or, sometimes, as a "heavy sonofa-".
This example is 9" long, a full 2 5/8" wide casting (no dovetails here), with a hefty 2 1/4" Thomas Ibbotson & Co. tapered iron. Stuffed, I believe, with rosewood. Weight is... heavy. I haven't put it on the scales, but you certainly wouldn't want to drop it on your foot. Or even pick it up much, to be honest.
And before you ask, yes, those are spots of rust. No exclamation from you about it will compare with the curses I directed at myself when I saw them. It has been an exceedingly wet year, but still... Horrors.
So that's the only infill bench plane in my possession. Occasionally I think I should probably sell it to someone who'd appreciate it more, but then I think I really ought to have one (British and all, old boy, what, what), and I'm never likely to acquire another, and any financial gain is likely to be far smaller than the nagging dissatisfaction I'd have about selling it. So, I keep it. In theory I know about 3000% more about how to make it go than I did ten years ago when I acquired it, so maybe I'll have another go at it some time and see if the scales fall and I gain a better appreciation of why folks get so excited by infills.