Neil,
Corrct me if I'm wrong, but your C15TA would be Z5668252 with hull s/n 1147. This C15TA was restored in Holland in the late 1980s, after which it passed on to a new owner. It was later sold/swapped to the UK - that would be you.
Thanks for the heads-up re. MilWeb. Although it is indeed a great channel to buy & sell HMV's, please remember MLU offers free advertisements
with photos