Hi Malcolm
Found this through tail number search;
http://www.airport-data.com/aircraft/W-2.html
Also searched by serial " BAPC.85 " and found the same data page.
Just upload your pix to tail number W-2 (3 characters long) you will see no match, but the uploaded pix will find and link up to your entry in the database of W-2.
I just did a "test upload to W-2 using a pix of MIL helicpoter RA-24500, and it worked OK) RA-24500. I will delete this pix from W-2 shortly, as its not my pix nor is it the correct type....
John