Pint Mason, Block Print, Shoulder not Square or Rounded, Whittled and a nice Swirl, Top looks ground to me,Side seams extend to top through the threads, But the bottom marks look new to me (But I'm a beginner)
To the left of marks is a small glob of glass, to the right of marks is a big seed
Nice Whittlin and A big swirl
shoulder is neither flat or rounded, its like an angle,appears to have a mold seam just below the angled shoulder
Lip sure looks ground to me.
Boyd Genuine Porcelain Lined