Need help identifying my steel.

[Cameron Mee]

I got this steel a month ago - it’s my first. It plays great and has had approval and a look over from a friend in town. No one seems to know what it is - but it’s certainly made very well.
I’ve not seen this exact bridge, keyhead or fretboard online. If anyone knows anything or can point me in the right direction it would be greatly appreciated.

Pictures attached. Thanks!

[Dave Hopping]

FWIW it looks as if it started life as a SD-12 extended E9. Might be a home build by someone who knows how to put a steel together