Victorinox florist knife.

[screened porch]

Found it!

The hardest part is learning to lay the flat side of the blade right down on the stone and saying the hell with the bit of scratching, its a working pocket knife.

This explains the scruffy back on mine. Somebody must have used it.

 

[Mainerd]

I was gifted mine in 07 I think and it may be the best blade I've ever had