Savage 99 Serial Numbers

Serial

Introduced in 1958, the plan was for the rifle to be called the Model 98, because Savage expected the retail price to be $97.98. But that didn’t work out because the price was raised to $109.95, so the rifle became the Savage Model 110. Post your serial number, XX last two numbers. If their is one also post the lever boss code. Found on the lever boss front, just above the screw that hold the lever onto the gun.

Savage

Savage 99 Serial Number Location

Mike...
Your Model 99 is NOT an 'EG'... an EG has a schnoble tip on the muzzle end of the forearm.
Savage began using what we call (in the Forum on another site) the Lever Boss Code ('LBC') in 1949. The LBC begins with a number (the inspector's number) followed by a letter which indicated the year of manufacture. In 1949, the letter used was 'A'. In 1950, they went to 'B', in 1951 to 'C', in 1952 to 'D' and so on to the letter 'Y' in 1971. The letters 'O' and 'Q' were skipped due to their similarity.
Apparently... and for unknown reasons, some rifles were pulled off the assembly line and set aside. Then, later, they were put back on the line and the manufacturing process was finished. This created a situation wherein the rifle's serial number may not accurately ascertain the year of manufacture for SURE. Thus, we can fall back on the Lever Boss Code to determine the year of manufacture if the rifle has one.
All the Model 99s (to the best of my knowledge) manufactured from 1949 through 1971 (inclusive) had Lever Boss Codes inside a small, lightly embossed OVAL located on the lower front side of the receiver opposite of and just above where the lever rotates. Often, the OVAL in which the LBC is stamped and the LBC itself are so lightly impressed that it requires a magnifying glass to see them... and then, some of the OVAL and/or the LBC may be too lightly stamped to be fully determined.
Here's excerpts from my records:
F= 1954: 686489(19F), 695xxx(19F), 704960(13F), 7184xx, 727303(13F), 747330(14F), 751488(?3F),7567xx(5F), 835192-lettered by John T. Callahan-shipped from the factory on 8/13/54),
G= 1955: 75858x(14G), 759100(“early ’55”), 76187X(G), 7680xx(17G), 7709xx(23G), 774xxx(G), 9001XX(23G), 903xxx (Rick 99 wrote, “The last of the 700,000 serials & the 1st of the 900,000 overlap.”)

John T. Callahan is a former worker at the old Savage Plant and has the plant's records of when rifles were shipped.
Rick99 is the most knowledgeable member of our Forum at a different site.
That said, if you look on the front side of your rifle's lower receiver with a magnifying glass (because the OVAL is often lightly stamped), you will see your rifle's Lever Boss Code. It will be a number followed by a letter. The number is the inspector's number and the letter will tell you what YEAR your rifle was manufactured.
If the Lever Boss Code (LBC) letter is a 'F', then your rifle was made in 1954.
If the letter is a 'G', then your rifle was made in 1955.
I suspect your rifle was made in 1955 by it's serial number, but... again... the LBC is 'THE' more accurate date-of-manufacture.
Incidentally, the Model 99s manufactured in the late 1940s and all of the 1950s up to the time (1960) Savage moved their plant from Chicopee Falls, Mass. to Westfield, Mass. were the finest Model 99s ever made and received a lot of 'hand' work by the older plant workers.
The .300 Savage cartridge was a 'father' of the .308 Winchester and is one of 'THE' finest eastern deer cartridges ever made. It can do anything the .308 Winchester cartridge can do, but gives less recoil. I hand-load my .300 EG with 40.8 grains of H4895 which gives a chronographed muzzle velocity of 2635 fps with a velocity variation of ± 3 fps (+1 fps/- 2 fps) with a 150 grain Nosler Ballistic Tip bullet. Accuracy is 1-inch at 100 yards (3-shot groups) and the point-blank-range is 250 yards.
'Point-blank-range' is the range from the rifle's muzzle out to the point in yards wherein the bullet never rises or falls more than 3-inches above or below the line-of-sight. Therefore, if you aim accurately, your bullet is hit well-in a deer's 'kill zone' (out to 250 yards) which is dinner-plate sized area on the deer.
Have fun with your rifle... it's a good one!
Strength & Honor...
Ron T.