THANK YOU for your responses.
Yes, it’s a 1986 as per registration.
I found the VIN# that matched the pink slip – it was assigned by the State of Arizona.
I also found the paper that was taped to the body: MFG by British Coach Works, LTD 5/84, VWR 2150 lbs.
The BCW VIN is 1B9AT12-L3G1074…etc
This is BCW # 324.