We have the one we took out of our 07 190P, but it is just an upholstered seat bottom and back. The box is used to support the armoire we swapped in.
I am pretty sure they are still in our crawlspace and in good shape, but would have to look to be certain.
The simplicity 210 Simplicity has two extra seats and I have no idea if they are the same as what our 190P had on the right hand side.
If it would work for you, and you could pick it up, you can have it for free as we will not ever be putting in back in.
We are in the Minneapolis, MN area.