[Heathkit] HP23A Power Supply Diodes

[Jim]

Hello all,

I came across an old HP23A that was in really bad shape.   It was 
literally covered in mud.  I don't know how  that happens but I guess it 
does.

Anyway, I thoroughly cleaned it, completely disassembled it and now I'm 
in the process of rebuilding it.

The parts list calls for 7 silicon diodes.   It doesn't however, give 
any specifications.   I'm wondering if any of you fine folks know what 
diodes I should purchase?

Thanks in advance.

Jim W1JT