Arnold, that is a fine specimen of the BL Super Enterprise!
This is the version with the (fake) Belpair fire-box and the smoke-deflectors in heavy duty black (probably repainted?).
These engines are a sight for sore eyes - especially when running on tracks. I dream of running a "Doppeltraktion" (double header) one day - I have two BL Moguls and now we could share our two black BL Supers...
I am a bit astonished that you talk of a four wick burner - my Supers all have vaporizer burners (the pros and cons of which are usually under discussion...).