Identification: ID please

Hi,
I have this one from seed, it looks pretty cool, nice red bark and 3-lobed leaves, but I lost the tag I made a long time ago. Any idea what it can be ?...

 

Most likely Acer tutcheri sp. from what I've been told...

 

Or a hybrid thereof. There is significant variation in tutcheri geographically it would seem, I don't think the species is fully understood. It should have white hairs on the vein axils.

What's the seed provenance?

 

I think it's from the seeds exchange a couple of years ago, a mixed batch.