First of all, check the local yellow pages for a company that makes stamps. There are many different online companies that do custom stamps and branding.
Contact any stamp seller on ebay.
Vista Print, Simply Stamps, Rubber Stamp Champ, The Stamp Maker and Current Labels can all create and ship a custom return address stamp for you company.
Contact the maker or find a book on the maker.
The 14k means it is gold and the kb is the maker or company.
The SK stamp on jewelry is the initials or mark of the maker or manufacturer. Often letters are stamped inside jewelry to show who made it.
You firstly have to consider what you are willing to spend and what are you going for in the aspect of how professional and how many stamps are you going to have to produce.This should all be put into consideration when thinking what exact stamp maker is needed for the task at hand.
Contact the maker.
On Ebay there are several different stamp making accessories for $8 to $20. While actual rubber stamp making machines go for anywhere between $100 to $139.
Contact the maker or find a book written on the maker.
I too would like to know. I have a plate with just a crown stamp on the back. I have no idea who the maker is and would love to find out.
Mark used by a Canadian maker of rings
Contact the maker.