Why are grey market Seikos sold without original box?

[JAM35F]

I'm after a Seiko Frankenmonster which will have to be sourced from a grey market dealer as it's not officially available over here.

All the dealers I have spoken to based here in the UK, America or Asia all supply the watch in a generic non Seiko box, but with original manual and tags. These dealers seem to be highly recommended and trusted (Creationwatches for example) so I'm pretty sure the watches are genuine. But why is the original box never supplied?

I'd really like the genuine Seiko box as it's a nice-to-have and may aid future resale value if I ever sell it. Why can I not get one? Alternatively does anyone know someone selling Frankenmonsters with original boxes and manuals etc?

Thanks in advance.

[JAM35F]

Hadn't thought of that. But they get the original manuals and tags? I would have thought Seiko would hold them back too.

If it is the case that seiko hold the real cases back then I won't worry about an original seiko case and just enjoy the money I save buying from a grey dealer.

[JAM35F]

Thanks for all the replies. Genuine box isn't as important as a good price on the watch.

I just wanted to check that lack of original box didn't imply a watch was a fake.

Thanks for the link to chronograph.com, not seen that site before. Useful if I did want a box or a change of strap in the future.