DSC08997

is that z scale look like N scale to me

There are not any couplers in Z that look like that (some are sorta close, but not the same). As it is sitting on a Kato box, and looks as if it would fit, I'm thinking it's N scale.In any scale, Hien does beautiful work.

It is N scale. Thank you GN-Z-phile for the comment.

Hien.