Green’s Dictionary of Slang

ned n.1

[ety. unknown; ? joc. use of proper name on pattern of Jimmy O’Goblin n.]

1. a guinea.

[UK]J. Poulter Discoveries (1774) 41: They ask change for a Ned or Six; if a Six, they will say, give me a Guinea, and the rest in Silver.
[UK]G. Parker View of Society II 27: The Queer Bit-Maker, like other industrious men, took orders for [...] fifty pounds-worth of Neds and Half Neds.
[UK]G. Parker Life’s Painter 141: I must go to mosque tomorrow, where I am to nab a couple of neds from the humane society.
[UK]H.T. Potter New Dict. Cant (1795).
‘The Mill’ British Minstrelsy 111: The prigs have been dipping their mauleys into that swell’s gropus nimmed [...] his gold ticker, three one-pound screens, two neds and his reader.
[UK] ‘The Mill’ Museum of Mirth 45/2: [as 1827].
[UK]G.W.M. Reynolds Mysteries of London vol. 2 142: Mill for a ned Fight for a sovereign.
[UK]Hotten Dict. of Modern Sl. etc.
[UK]Sl. Dict.
[Aus]Sydney Sl. Dict. (2 edn) 6: Ned - A guinea.
[US]Baltimore Sun (MD) 20 Sept. 17/6: The essential ‘needful’ and its sister ‘Ned’.

2. (US) a $10 gold piece.

[US]T. Haliburton Clockmaker II 78: Quacks also, who make their ned out of ’em.
[US]Matsell Vocabulum.
[US]Dly Dispatch (Richmond, VA) 1 Nov. 3/3: ‘Ned’ or ‘dews’ means $10.
[US] ‘Jargon of the Und.’ in DN V 456: Ned, A ten dollar gold piece.
[US]Irwin Amer. Tramp and Und. Sl. 134: Ned. – A ten dollar gold piece or eagle.
[US]Monteleone Criminal Sl. (rev. edn).

In phrases

half-a-ned (n.) (also half-ned)

1. ten shillings (50p).

[UK]G. Parker Life’s Painter 178: Half a guinea. Half a ned.
[UK]H.T. Potter New Dict. Cant (1795) n.p.: half-a-ned, A five-dollar gold piece.
[UK]Sl. Dict. 235: half-ned, half-a-guinea.
[US]Dly Dispatch (Richmond, VA) 1 Nov. 3/3: A ‘beam’ is half a ned.
[Aus]Sydney Sl. Dict. (2 edn) 6: Half-ned, half a guinea.

2. (US) a $5 gold piece.

[US]Matsell Vocabulum 40: half-a-ned A five-dollar gold piece.
[US]Trumble Sl. Dict. (1890) 17: Half-a-ned. A five-dollar gold piece.