Hans Wegner JH 507 similar dining chairs and draw leaf trestle table  

At first glance, these dining chairs look like Hans Wenger model JH 507's for Johannes Hansen, but there are several subtle differences - the fronts of the arm rests are more squared off, and the tops of the back rests are rounded off cubes, not dowel-shaped, for example.

These are the best photos I have at the moment, but I think you can probably see the armrests have a slight flare.

Wegner had over 500 different chair designs, but even so, I'm guessing this is a case of another designer "borrowing" or being inspired by the JH 507.

I have also not been able to find a comp on the draw leaf extension table with its exact trestle base.

The whole dining set is from a single estate. It was purchased in the 1960s for a (then) new high-end Mid-Century home in Denver. Any help with identifying much appreciated. Thanks.