Found more information elsewhere, when he was given all the information he asked for here.
But he found an M on it, so all is well. He's got himself a 99M!!
Let's not spoil his newfound confidence, guys.
“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