I will do! thanks very muchYes, they are July 25th 1980 Maxons, most likely UD, U-1000 or U-2000's
due to a lack of other back markings.
You can resistance test magnets to see if they are ceramic or Alnico as outlined earlier in this thread.
That should help rule out either UD's, which used non conductive ceramic magnets, or U-2000's,
which always used ferrous Alnico magnets.
I'm not sure when U-1000's switched from use of Alnico 8's to ceramic magnets.
All three pickup types were within the same resistance ranges as yours,
so that's about the best you can hope for from an identification standpoint.