I did a custom minimag for a close friend recently and had her name Laser engraved on the body. The shop where Dad works
makes parts for Nascar and they laser engrave their logo onto them. Here is a pic of the test body.
You might try checking around with machine shope in your area that might be making parts that require custom markings/engraving and see if they have a Laser engraver or know of a place to have it done. I will tell you this, even someone very experienced using the laser will have to do some trial and error getting it to look the way you want it. And things such as engraving around the circumfrence of a bezel would probly never be worth the setup to do just 1 or 2.
I got this one done as a personal favor to me. Please no one ask me to get any engraving done for them. Its not a matter of cost, it was a matter of taking time out of a heavy workload to do me a favor.
Tim