Does the scroll photo above say 001 or 006 or..?
From Dozin's Garcia guitar timeline:
"72- cont. Garcia bought the first guitar Doug Irwin ever made for $850 (known as 001) and ordered another one custom-made.
.....
In May '73 he received the his first custom Doug Irwin (Sonoma, CA)--the "Wolf" he paid $1,500. (Garcia gave Irwin's 001 to original Dead road crew member Ramrod. Garcia gave away a lot of guitars.)"
From the Bonham's "Eagle" auction info:
"small brass placard on back of headstock reads "D. Irwin 025;" back body panel has three inlays (two silver symbols plus the Alembic Studios logo) as well as the serial number which reads "GD [Grateful Dead] 025;"
This was the first guitar completed by Doug Irwin, who states that the "GD025" serial number is indeed his first complete guitar.
Although this was Irwin's first complete guitar (and Garcia's first custom-made guitar), the serial numbers did not start with #1, but rather with "GD025" for "Grateful Dead." Garcia played this guitar for about two years and then gifted it to Ram Rod in 1973."