Altogether 16 ships has carried the name LIVELY in the Royal Navy, so it is difficult to say which sailing vessel is depict on this stamp, the only LIVELY connected with St Vincent I can find is the HMS LIVELY built in 1756.
Wikipedia gives that in 1779 a small French flotilla with as flagship the Le LIVELY sailed from Martinique to capture British controlled Saint Vincent, so at that time she was not a HMS vessel as given on the stamp, by counting the gun ports on the stamp I still believe she is the 20 gun ship LIVELY completed in 1756.
20 May 1755 Ordered by the yard of Moody Janverin, Bursledon.
June 1755 keel laid down.
17 July 1755 named HMS LIVELEY.
10 August 1756 launched under the name HMS LIVELY one of the Gibraltar class.
Tonnage 433 ton (bm), dim. 107.8 x 30.4 x 9.8ft., length of keel 88.6 ft.
Armament: upperdeck 20 – 9 pdr. guns.
Crew 160.
20 August 1756 completed at the yard.
17 October 1756 ready for sea at Portsmouth.
Lively was commissioned in July 1756 under Captain Francis Wyatt. In November 1756 she captured the French privateer INTRÉPIDE, of Nantes, and her prize, the CHARMING MOLLY, which had been sailing from Malaga to Bristol. INTRÉPIDE was armed with eight guns and 10 swivel guns, and had a crew of 75 men. LIVELY brought the two vessels into Plymouth. Around this time she also recaptured the merchant vessel PIKE, of Liverpool.
LIVELY sailed for Jamaica on 31 January 1757. In March 1759 she was under the command of Captain Frederick Maitland, at Jamaica.
On 17 October 1760 she was with HMS HAMPSHIRE and BOREAS when they intercepted five French vessels in the Windward Passage. On 18 October LIVELY used her sweeps to catch up with the sternmost enemy vessel, the French 20-gun corvette VALEUR. . VALEUR had a crew of 160 men under the command of a Captain Talbot. In the hour-and-a-half fight before VALEUR struck, LIVELY had two men killed and no wounded; VALEUR had 38 killed and 25 wounded, including her captain, master and boatswain. BOREAS captured SIRENNE, and HAMPSHIRE chased the merchant frigate PRINCE EDWARD on shore where her crew set fire to her, leading her to blow up. On 19 October, HAMPSHIRE, with LIVELY and VALEUR, cornered the King's frigate FLEUR DE LIS in Freshwater Bay, a little to leeward of Port-de-Paix; her crew too set her on fire. The merchant frigate DUC DE CHOISEUL, of 32 guns and 180 men under the command of Captain Bellevan, escaped into Port-de-Paix.
In March 1762 Captain J. Jorer took command of LIVELY from Maitland. Captain the Honourable Kieth Stewart replaced Jorer later that year, and cruised her in home waters. In June 1763 he sailed her to the Mediterranean and remained in command into 1764.
In April 1769 Captain Robert Fanshawe recommissioned LIVELY for the Channel. Fanshawe apparently commanded her through 1770, and in 1771 was superseded by Captain G. Talbot. In early 1771s LIVELY served at Plymouth as the flagship of Admiral Richard Spry. Then on 18 June 1771 Talbot sailed her to North America. In 1773 Captain William Peere Williams took command of LIVELY on 11 October 1773, sailing her back to Britain and paying her off in December. Captain Thomas Bishop recommissioned LIVELY in January 1774. On 16 April he sailed her for North America.
On 13 May 1774, LIVELY arrived in Boston. She brought with her General Thomas Gage, and thus ushered in the military governorship of New England.
In 1775, LIVELY was part of the British fleet that blockaded the port of Boston to enforce the Boston Port Act, a punishment of that city for the Boston Tea Party. She was present during the Siege of Boston, and was the first ship to fire at the fortifications erected by the American colonial militia, helping to spark the Battle of Bunker Hill.
In 1776 she cruised off Marblehead. She captured a number of vessels off Cape Ann: in February the schooner TARTAR; in May an unknown sloop (unknown because the crew abandoned her and fled, taking all her papers with them); on 26 June, LIVELY, MILFORD and HOPE took the schooner LYDIA, bound for the West Indies. The Vice-Admiralty Court at City of Halifax, Nova Scotia ruled all three to be prizes.
In March 1777 Captain Robert Biggs recommissioned LIVELY. On 10 July LIVELY, having escorted an ordnance sloop to Guernsey, then proceeded to sail to meet Admiral Keppel's fleet off Ushant. In the morning, as the fog lifted, she found herself near the French fleet, under Louis Guillouet, comte d'Orvilliers. The French cutter CURIEUSE, of 10 guns and under the command of Captain Trolong du Rumain, chased LIVELY and ordered her to lie to, which order Biggs declined. However, the 32-gun IPHIGÉNIE, Captain Kersaint de Coëtnempren, came up and and ordered Biggs to sail LIVELY to the French admiral. Biggs was still arguing when IPHIGÉNIE fired a broadside. The broadside killed 12 British sailors; thereupon, Biggs struck.
The French Navy took LIVELY into service without renaming her. In January-February 1799 she was part of a squadron, together with RÉSOLUE, under Admiral Vaudreuil that captured Fort St Louis in Senegal from the British. The troops were under the command of the Duc de Lauzun.
LIVELY then sailed to the Caribbean. In June 1779 she was the lead ship in a small flotilla sent from Martinique to capture British-controlled Saint Vincent.
On 29 July 1781, Captain Skeffington Lutwidge's HMS PERSEVERANCE recaptured LIVELY which was under the command of Lieutenant de Breignon. LIVELY put up a short, desperate defense during which she had six men killed and 10 wounded, one whom died later. LIVELY was on her return from Cayenne, had been at sea for 53 days, and ten days earlier had captured the ROSEMOUNT and the KATHERINE, which had been sailing from Cork. In capturing LIVELY, PERSEVERANCE recaptured the two brigs. LIVELY had also been in company with the corvette HIRONDELLE, which however escaped.
August 1781 laid up at Plymouth.
She was sold in March 1784 there for £405.
Grenadines of St Vincent 1982 30c sg216, scott?
Source: Wikipedia.