Ken, the top saw is a japanese Timber Saw from Japan Woodworker. its for crosscutting fresh softwoods, very coarse fast cutting. when it was new I could trim 3" branches from White Pine trees in the yard with a stroke and a half. Way to aggressive for use on hardwoods. It's also available as a Ripsaw.
Silky also makes a similar model called Zorin that has a replaceable blade.

Not all who wander are lost.