The term for raised lettering is embossing, whereas stamped into the metal is impressing. Here is a link to a company that sells hand operated machines to do either:
http://shortorderproducts.com/Emboss...Mtl_Emboss.htm
I have linked to their embossing machines, which appear to be strictly for the tape style like Hanno has shown. They have an interesting press for doing impressed lettering but unfortunately that is not the style we are after.
Perhaps contacting this company might lead to something, but the end results, looking att the price of the machinery, will not likely be cheap.
I also found a link to a company in the UK that embosses serials etc for vehicle data and line production plates.
http://www.classic-plates.com/
The carrier plates almost look like something they might be able to replicate.