American Gold Half Hunter Pocketwatch

A 20^th Century American lever in a gold half hunter case.  Nickelled split three quarter plate 15 jewel  keyless movement with going barrel.  Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring.  Club foot lever escapement.  Signed white enamel dial with subsidiary seconds, Roman numerals, blue steel half hunter hands.  Plain 9 carat Dennison half hunter case with blue enamel chapter ring, maker's mark "ALD" in a rectangle.