Hey Homepin,,
Some useful info for you.....
The missing "chime" was your "knocker" for when you get a replay or special etc.
The silver flecks of paint or black stringing etc were put on a lot of machines that were stenciled... the idea was that it detracted the eye from stencil overspray or registration mistakes. In other words - the stencilling was not a perfect method and each machine will be slightly different, the flecks "broke up" the joins in the various layers of paint.
NICE machine BTW!!!