That is an old plane, the channeled surface is something they did in the 30's-40's, as mentioned above, so many companies produced planes that were virtually identical to Stanley's product, so much so that you could mix and match parts which is why so many planes don't really match but work perfectly.
Here's and old Stanley/Bailey I have, clearly made in the US but with a Canadian made blade. Always a joy to use it when I can find something to use it on.
Value? You see guys trying to get $80-90 for them all the time but really $15-20 is the going price that I've seen whether they are restored or rusted out.
Did someone say Spoke Shave?
I'm a bit of an old tool addict myself, if you want to turn this into an old tool show and tell thread I'm sure we could fill it with the stuff we all have tucked away.