I am selling an excellent condition Seiko SPB107 Topper Ninja. This one is limited as you may already be aware. It is 44mm but honestly, as others have said, it wears much smaller. Looks the right size on my smallish 6.5" wrist anyway. Comes with the stock rubber strap and this Erika strap as well (cost new is ~68EURO). It will of course come in its original box, etc.
I have several references on WUS and TRF under this username. Please email with any questions!