Well, it has arrived my pre-owned Dan Henry 1964 Gran Turismo and looks very nice. It’s my first meca-quartz watch and it has a Seiko VK63 movement.
I’ve been reading up on it and apparently Dan Henry only made 1964 of these and each are uniquely and successively numbered on the caseback. This one being 17**-1964.
I have some mild scepticism about caseback serial numbers given the proliferation of fake Oris Big Crown Pilots a few years back all numbered '26-58574’. That said, these Gran Turismos are so competitively priced, it wouldn’t be worth anyone's while to fake one of them.
Although it has a black dial, the coating on the crystal can make the dial look blue in different light conditions.