It looks save-able. Extra deep pitting pitting may be present looking at the pics enlarged. But it's surprising what can be removed,,and what can be hidden w/engraving. An excellent TIG welder can be handy to know too.
I wonder how the bore and chambers survived.
If badly pitted, perhaps a re-do to 45Colt would be in order to clean them up. I'd like to save the original bbl and cylinder if possible.
Orphan 44TL bbls show up for sale,but I can't remember a TL cylinder in a long while.
Hate to see it 'go to parts',,I'd be drawn to that as a project gun like an addict if I saw it at a show or in a shop.
But it'll probably go for more than the estimate w/those grips.