Blimey £200 quid.It has been discussed many times on here, that the problem with imperial chucks is the price and availabilty of jaws.....
That said if the scroll and the chuck are in good order it could see you out in hobby use ..trying to find a 'modern' chuck with d1-4 pins of any tangible quality is going to make the jaws look 'cheap'
I hope you seated comfortably, https://www.ebay.co.uk/itm/362503560864 this is Rotagrip as per @Brad93 suggestion .
Keep your eyes peeled you may get lucky on ebay ocassionally ! but Rotagrip are pretty much the only shop in town for off the shelf.
The ones you are looking for are:
2210-17603 Hard Inside (as above link)
2210-17602 Hard Outside
2210-17606 Soft Jaws (what you have fitted now) https://www.ebay.co.uk/itm/Soft-Scr...erd-6-1-4-Chucks-2210-17606-EJG-/292115922359 (again this is Rotagrip)
Yeah that’s a good shout, would get inside and outside jaws as well, wonder if the backplate fits…You can get a standard precision 160mm Pratt Burnerd for under £300. But that doesn't include the back plate, it might be worth investigating whether your existing backplate can be made to fit.
Measure the register and bolt hole PCD on yoursYeah that’s a good shout, would get inside and outside jaws as well, wonder if the backplate fits…