Yup, that's an 1899C. The perch belly didn't start until later, if you give us the first part of your serial number (x out the last couple digits) we'll date it for you.
An 1899C in 25-35 is a very desirable rifle.. I'm sure you're already getting offers to sell.
Real price is going to be based off of condition, but the real way to find out what it's worth is to auction it off and see what folks are willing to pay. Course, if you sell you'll probably not find another one like it, so I'd keep it if I was you. The prices are only going up..
Welcome to the forum! Pics are still appreciated if you can manage it..