John Thomas Serres - An English frigate amidst much activity in the Bay of Naples with Vesuvius erupting beyond CSK 04056 0416 000(010402)

An English frigate amidst much activity in the Bay of Naples with Vesuvius erupting beyond. The ship is flying the Blue Peter, the signal for All persons should report on board as the vessel is about to proceed to sea.
signed and dated 'Giov.ni T. Serres/1823' (on centre boat)