Sentence:  The betting also began to shift. "Sixpence Ned wins!" cried three or four; "Sixpence he loses!" answered another; "Done!" and up went the halfpence. "Half-a-crown Joe loses!"—"Here you are," answered Joe, but he lost again. "I'll try you a 'gen'" (shilling) said a coster; "And a rouf yenap'" (fourpence), added the other. "Say a <nowiki>'</nowiki><WSD>exes</WSD><nowiki>'</nowiki>" (sixpence).—"Done!" and the betting continued, till the ground was spotted with silver and halfpence. 
Meaning of the word marked with <WSD> tags:  The number six.