It's a Champion, I can see the wood saw layer
SwissChamp, actually, but same idea
It's a common knife with the saw and fish scaler closed. You'll find a lot of sellers simply don't know the saw and fish scaler are there. They open everything with a nail nick and take the picture. There are lots of SAK collectors out there who got excited about the Modeler they just scored and when they get it find that it's really a Champion. I have several old knives that I've bought as Climbers that are really Hunstmans.
In this case the give-away is the chisel AND fine screwdriver on the back. These only exist on file and saw layers. Since there are two of them, there must be a saw that's not open. Older Champions with only the fine screwdriver (pre-87) are harder to ID.