This ex Hong Kong car is registered in NZ under its body number. No chassis plate is present anywhere.

The heritage certificate lists two body numbers separated by a /
The number I have on a small silver plate (Not screen printed named plate) is T078556CG
What is the other part of the number on the certificate, the number 73997. Would it be on a plate? Where would that plate be located?
I know of three possible locations for plates with Body numbers
1. Headlight panel gutter under bonnet lip on LHS
2. Under windscreen and plastic dash almost at the windscreen. The flat surface before the metal for the windscreen frame just above the steering column
3. I have seen them on the turret top
I just want to get all the numbers correct on this reshell I am working on. It is more important because the car is registered by body number.
Jolyon