Anyway, £20 is a lot of beer tokens. For just less than £16, I have just received, from Australia, a complete set of AP101B-1900-6A and AP4505A Vol 1 in PDF fomat.
If you did, go to the City of Norwich Aviation Museum and repair the corroding remains of Arvo Tin Triangle that is dying there.. Sarfends one is OK, cos it gets a good coating of AV8 on a regular basis. Good old CPC..