It's difficult to provide a value; but what I can tell you, is that it is worth more as it currently is (sympathetically cleaned).
The paint and decals/transfers look to be in good condition, clean the frame carefully - don't damage the transfers. If you were to have the frame re-finished or powder-coated
, it's value would diminish.
Originality is greatly prized and accessories of the period will add to its worth - the value of those two saddlebags might surprise you - I've seen Carradice bags - much like the larger (olive green) bag that you have, go for between £40 - £60. The mudguards, the rubber covers on the brake levers, the saddle - all these have a value.
Clean it, keep it as it is and use it !
Looks a very nice bike !