Hi aviate1138 ...
Interesting picture you have there ... A Mk22 Chipmunk whose airframe number is, I believe, C1/0902 which never served with the RAF. Note the Turn-and-Slip is reversed with the VSI compared to the RAF instrument configuration seen in my pic and yes ... modern accouterments have been added. I believe this example still lives in Denmark
I'll get my anorak ...
Best regards ...
Coff.