I've seen 2 and 3 digit numbers on buttstocks/buttplates that didn't match the serial number. They were later factory repairs.

Had an 1899B with SVG stamped shotgun buttplate, both buttstock and buttplate had 2 digit codes on them.

[Linked Image from savagefest.net]

[Linked Image from savagefest.net]

[Linked Image from savagefest.net]

Last edited by Calhoun; 01/25/23.
“The Savage 99 Pocket Reference”.
All models and variations of 1895’s, 1899’s and 99’s covered.
Also dates, checkering, engraving.. Find at www.savagelevers.com