Need help on model 99 EG before purchasing

I have found and am interested in purchasing a Model 99 EG, serial # 846XXX. I'm told it has an approximate DOB of 1953; should there be matching serial numbers on the forend, stock, and butt plate? The only marking found are possible assembly numbers as follows, forend marked "NM" with a "18" or "I8", the butt plate is marked "NM" 17 and what appears to be "207" stamped separately. Are these markings correct for this age rifle? Any help and info you can share with me would be appreciated. Would hate to pull trigger on a purchase of a rifle that has been pieced together. ???

Yes - last 4 of SN should be on rear face forearm, butt plate, and butt end of stock.

Savage quit putting serial numbers on their rifles after WWII. It should have matching assembly codes stamped on the butt stock, butt plate and forestock. These codes should all be the same on each piece. The code will be stamped on the side of the receiver frame underneath the butt stock. The butt stock has to be removed to see these codes. The 800,000 series numbers are uncommon as savage hardly used any of them, skipping over them to get to 900,000.

I'm guessing he got the serial number wrong, I'm thinking it's a 6.

Every 800,000 I've run across isn't in that serial range, should be 83XXXX.

Thanks for all the input guys, I have confirmed that all the parts have corresponding assembly codes, and the serial number is 846084. Was there any specific reason why Savage would skip serial numbers in the 800,000 range?