I think I have a theory for this pedal "oddness".
That pcb is an original Boss replacement part, the pedal was serviced and the complete pcb was replaced, more on that later.
About the lid (long dash) and the label (use a coin), I ask: How much we can rely on the decoder for 6 digits
stamped batch numbers ?
I mean, it works great for most manufacturing periods, but not so for early MIT sticker printed batch numbers, giving a false result, saying those pedals are from early 80's, when actually they are from the 90's.
Even later MIT batches (still printed stickers) with letters before the numerals, we should leave the letters out and use only the numerals.
What if those stamped 6 digits are not correct interpreted by the decoder ?
The decoder give us January 1983 for the pedal (262600), it is very close to what would be consistent with the lid and label, early 1982, just a year.
Why Boss stamped after the 06XXXX ? Never saw a good explanation for that.
To say it was a sticker shortage is too simplistic and too demeaning with Boss organizational capabilities, even because it happened quite a few times !!!
What if Boss removed the original batch number in serviced units, stamping a new and actual, for the time of the service, batch number to mark that unit as "serviced" in a very discrete way ?
At some units, the service would be imperceptible, like change an IN/OUT jack.
This could be the explanation for those stamped post 06XXXX batch numbers.
Back to the pcb, the capacitors (film and electrolytic) are very old style in appearance, doesn't look like to be from post 1988/89 (MIT era), they look like from early 80's for sure.
And the "Made in Taiwan" wrote on the pcb, I never saw a "legit" MIT (post 1988/89) pcb with that.
So the Mr. "M's" late 80's OD-1 reported in the Boss book, would be also a serviced unit, with the "Made in Taiwan" original replacement part.
This is like Fender guitars, if you have an American built guitar and want to modify its appearance, you will buy Mexican made original Fender replacement parts, like pick guards, knobs, etc.
So this is my theory for now. I will take a better look when the pedal arrive and bring more details of it.
I am prepared to accept that it could be just a rumble pile of different pedal parts (in the lid and label case), but also excited to have a serviced, confusing, mysterious DS-1 in my collection.
If I am right about the pcb being an original Boss replacement part, then it is a very rare thing because of the high reliability of Boss pedals, right ?