The knife is a Randall Model #7-4 1/2". The sheath is stamped 7-4, because the shop has no longer stamped the fractions on their sheaths no decades. The knife is no longer available with those nice finger grips..."but"...the whole knife could do with a "re-do", then it would be a fine knife.
You can send the knife to the Randall shop (or to me) and a quote will be given, which you have to authorize before the work would be completed. My guess is about $50 bucks...or so.
Hope this helps, Capt. Chris