Seed leaves often don't look quite like mature leaves, but prb'ly silver maple.

Yes, and with the capability of red and silver maples hybridizing, there's the possibility of having genes from both species present to varying degrees.

Seed diversity will also play a part in the plant's appearance.

The silver underside of the leaf spells silver maple. To me anyways.

Nice pictures btw. :-)

Thanks for the replies!