Though I don't own this Watch I felt it important to document it here because it's an unknown Variant. As far as the NAWCC data base goes there are no Two-Tone Grade No. 64's. This is a OT3P-U (Open Face, 2-Tone, Model 3, Pendulum Set, Unadjusted, Model), Manufactured in 1908. 

  It has a Single Sunk, Arabic, Dial, w/ Red Minute Chapter & Blued, Medium Spade, Hands. It's housed in a Plain, Screw Back & Bezel, Gold Filled Case.