First off, welcome to the site biglever, Now for the fun stuff. That (x) isn't part of the rifle model. It's a proof mark. Here is a little page that will show you ALL markings for LE's and has history for all the LE models. Go to it, read up on it and then find the matches for the markings on your receiver ring and side of the receiver as well as on the barrel then you will have an exact picture of what you need to bring it up to originality rather than a mix and match if that's what you want. I might or might not have some stuff for you. I have sporterized a few #4's both US Savage made as well as Brit made. Also have a couple of the #4 MKI (T) refitted by H&H to be "sniper" rifles so I do have a few parts laying around the shop if one of my kids hasn't robbed the bin. One of my boy's is into the LE rifles pretty heavily so his head is always flitting around in my shop looking for build parts. Here is that site for you http://www.allaboutenfields.co.nz/history/markings/