This little thimble is from the Orient-Express.com Gift Boutique as part of the site's Ladies' Gifts selection. It is £10.00 (US$18.93), plus S/H. They also offer a similar one for the Northern Belle Train. To an American ear, Northern and Belle don't quite go together, but I digress.
I have some concern that while the side shown (at left) is perfectly acceptable, the rear view might be absolutely ghastly. Not such a horrible thing though. It happens with the best of us.