I like your Landy Sir, it is ones I ever had. It is almost in original condition but only the tropical roof aren't I guest. Actually it is standard hardtop model. Congratulation.
I have the same year model Series 2A 88. Just got and it goes great, but need to do a bit of work on it. These are some of the best models out there I think.
I had one a 1965 with the lights next to the grill with the same roof has yours here in NZ . I think the dealer was the one that did the roof it was a knock down kit from the UK