Green’s Dictionary of Slang

lord (of the manor) n.

a sixpence.

1839		H. Brandon Dict. of the Flash or Cant Lang. 163/2: Lord of the manor – sixpence.
1859		Hotten Dict. of Modern Sl. etc. 60: LORD OF THE MANOR, a sixpence.
1864, 1867, 1870		Hotten Sl. Dict.
1881		Morn. Bulletin (Rockhampton, Qld) 18 July 2/6: For our next coin in value twenty names are found, viz: - ‘sixpence,’ ‘bandy,’ ‘broder,’ ‘cripple.’ ‘downer,’ ‘fiddler.’ ‘fyebuck,’ ‘half-hog,’ ‘kick,’ ‘lord of the manor,’ ‘pig,’ ‘pot,’ ‘say saltee,' ’sprat,’ ‘snid,’ ‘simon,’ ‘sow's baby,’ ’tanner,’ tester,’ and ‘tizzy’.
1905		Exeter & Plymouth Gaz. 4 Feb. 5/6: A sixpence [...] has been a ‘tester‘ [...] a ‘lord-of-the-manor,’ a ‘bender’ and a ‘cripple’’.
1910		Dundee Eve. Teleg. 3 Aug. 4/1: He orders a 'lord's worth' (Lord of the manner [sic]) of 'finger and thumb'.
1922		Dundee Eve. Teleg. 19 July 2/4: Sixpence is a popular coin in slangdom [...] ‘half-a-hog,’ ‘kick,’ (thus two and a ‘kick’ 2s 6d)‘lord of the manor,’ ‘pig,’ ‘pot,’ ‘snid,’ ‘sow’s baby’.
1935		Thieves Slang ms list from District Police Training Centre, Ryton-on-Dunsmore, Warwicks 6: Lord of Manor: Sixpence.
1953		J. Franklyn Cockney 295: Lord o’ the manor, which stripped down to bedrock gives us, ‘Oi – ere – Tom – gis a lend of a Lord.’.
1969		S.T. Kendall Up the Frog.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.