Craigslist find ...
Pristine Heresys for $300.00
HWO - Walnut Oiled
S/N 164Y419 & 420
Not sure but I think they are from 1983.
Can someone confirm ?
I noticed too that the serial numbers are also stamped on the top ridge of the cabinets as well.
I have had a couple pairs of HBR's in the past but they never had the stamp on the cabinet.