I believe I posted another of these quite some time back, but have since acquired this nicer example. Although undenominated, its size indicates it would've been valued as a halfpenny. My impression is that this issue did circulate to some extent, but almost certainly the real purpose in striking them was to make a political statement rather than facilitating everyday commerce.
The building depicted on the obverse is the infamous Newgate Prison, where at that time the four gentlemen identified on the reverse were confined for sedition. Two of these, Henry Symonds and James Ridgway, were held for publishing Thomas Paine's The Rights of Man (Paine meanwhile had fled to France). Daniel Holt had also printed Paine's works. Rev. William Winterbotham, a Baptist preacher, had been sentenced for his utterances from the pulpit, but the construing of any of his exhortations as radical, revolutionary, or subversive seems in retrospect dubious at best.
Here verbatim is the close of one of Winterbotham's sermons for which he was prosecuted:
"Take no doctrine on trust; you have the scriptures in your hands, use them as the touchstone of truth; persecute no man for his religious tenets; labour to spread abroad the rays of divine truth; attend with diligence to the instruction of the rising generation, and instil into their minds proper principles of civil and religious liberty. As Britons, it behoves you in the present important crisis to act with that dignity which has long characterised this nation."
The above seems hardly like anything even remotely approaching rabble-rousing, and a pretty flimsy pretext for Winterbotham's conviction and the four years of incarceration imposed, but that was what happened.
The fact is that at the time the establishment was highly anxious on account of the upheaval that had just occurred in newly republican France and there was indeed an element of hysteria in their fear of what a similar movement might portend for the British monarchy, system of government, and societal norms. As a consequence, any perceived criticism or disrespect (even albeit of the mildest sort) of the king, his ministers, parliament, the courts, or the Church of England was viewed as needing to be ruthlessly suppressed and punished. The powers that be had adopted what we would call today a zero-tolerance policy.
Here's a bit more on Conder tokens as they relate to Thomas Paine and the spread of his humanistic ideals:
Well, not so many, really, and they're certainly not all in such nice shape and/or so interesting as the ones I've recently posted. But as of late, I've become more discerning, and definitely have put condition at the top of my list of acquisition criteria, with historical significance a close second. Ones exhibiting artistic merit also get my attention.