trying to date 2 old amber/brown bottles found in NC. Both bottles have stamped Federal Law Forbids Sale or Reuse of this bottle.
1 bottle has stamp on the bottom - 73 D126 51(in a circle) and Ball
1 bottle has stamp on the bottom - D-126, 12 A(in a circle) 50, made in u.s.a., pat'd 9546
Just curious about how old these might be. 1935-1964? Wondering how to read the stamps on the bottom of the bottles. The seam run up to the lip on both bottles.