HENRY FRODSHAM No. 1980: A small-size two-day marine chronometer, the silvered dial signed Henry Frodsham, successor to Parkinson & Frodsham Liverpool No.1980, Roman hour chapters, Arabic 5-minute intermarkers, subsidiary seconds and up-and-down dials, gold hands, Earnshaw escapement, spring foot detent with jewelled pallet, cut bi-metallic balance, segmental heat compensation weights, blue steel helical balance spring, the top coil pinned to 'gallows' cock extending over balance rim, in brass dust cover with bayonet securing and cross-springing on bottom, in brass bowl with three locating pins and brass gimbal, brass-bound three-tier mahogany box with small rectangular ivory plaque to front of middle section, external brass drop handles