Musicol was a studio and record manufacturer based in Columbus, Ohio that
handled a lot of small rock and soul records. If the disc is labeled as a
regular release,
then it would not necessarily be a test pressing; perhaps it would be that
the cutter held particularly high standards for notating his jobs with data
relevant to the cut.
It was not unusual for producers of client recordings to put such
information into the lacquer so that if there was an issue they could
review it for quality control purposes.

When my band Qi-ZZ made its single at Jewel Records in 1980 we took down
Rusty York's cutting notes and included them on the sleeve of our record,
so anyone
with an equalizer could make adjustments and hear the record better than
with standard equipment.


Uncle Dave Lewis

On Fri, Oct 9, 2015 at 3:54 PM, Chris Bishop <[log in to unmask]> wrote:

> I have a '70s 45rpm single by a rock group called Gun Shy. The deadwax
> markings by the engineer are more detailed than on any other single I've
> seen. Some are hard to make out but this is my best guess, all hand-etched:
> Musicol 103450
> +5 EQ STD
> LO +3@25
> HI +2@4K
> BDH1 +1 TO /2
> FIL 8K
> M/W MAC/W +3
> Seems to be about the same on both sides except for the 6 digit number
> after Musicol. Would these kinds of notes imply this is a test pressing?