First time poster with a question

[Alan de Enfield]

It looks to be a nicely preserved rifle - presumably you have identified the markings so know its history ?
It started life as a No4 Mk1 rifle, which then went back to the factory for a 'rebuild & update' (called an FTR = Factory Thorough Repair) where it was brought up to the latest specification with trigger modifications, it then became a No4 Mk1/2

After its military life, it has had a civilian life of target shooting (hence the target rear sight and the 'regulated by Fultons marking)

Is it worth it ?
Depends on what the asking price is.
Depends on the woodwork being undamaged
Depends on if everything is 'tight'
Depends on the condition of the bore

In the UK the retail price for the rifle would be around Aus$ 1100 and the target rear sight would add another Aus$ 300