A No.4T appearing at a UK auction
https://www.peterwilson.co.uk/auctio...pp=48&pn=1&g=1
The serial number appears to have been changed, there is definitely a 4 underneath the 'S' used to strike the number out.
The sidewall 'T' demonstrates none of the signs of being punched in, possibly engraved?
Cheekpiece fit is not the best piece of carpentry
Front pad screws look odd
Caveat Emptor