All prints are produced in Poland with a company I have been using for years - their products are of absolute top quality.
Images are printed on an aluminium plate and then covered with acrylic glass. This has two advantages: it requires no framing and thus is ready to mount, and it looks absolutely gorgeous. It also is quite durable, should easily withstand decades without a noticeable drop in quality.
Unfortunately, the process comes with a disadvantage - the photo is quite big and a bit expensive to transport. For quality control each print needs to be sent twice, first from the printing facility to me for inspection, and then finally to you.
Each print is hand signed and numbered on the back plate.