Going to the source[0], there is no reference to the punishment listed. In fact, other punishments listed on the same page seem mundane in comparison, e.g.
> ... the Jury found him Guilty to the Value of 38s.
Is it possible this is just a transcription error?
Edit: maybe not, see [1]
[0] http://www.oldbaileyonline.org/images.jsp?doc=171601130002
[1] http://www.oldbaileyonline.org/images.jsp?doc=171601130006