They are not reproduced, and NOS ones are very hard to find. In the past I have taken an NOS pad and carved the rubber out to put the disc brake medallion into it. Works just fine and if you do it right it will look as good as NOS when done. Your original cleaned up pretty nice!
Thanks to Jon Krogh,I was able to get my hands on a very rare needle in a haystack some time back. A NOS "cheap-o" disc brake pad. Wasn't cheap, but worth every dime to me. Amazing how rare some of these items are becoming.