~1908 Waltham size 18s pocket watch movement. Signed "P.S. Bartlet". Balance spins when movement is gently tapped but quickly stops. The balance does wobble slightly though, the axel may need replacing, not 100% sure. Minor corrosion on balance bridge and mainspring barrel (see pictures), not horrific though. Serial number: 17043531. Enamel dial is free of any cracks. I do not know when this movement was last serviced.