'WRL' stands for 'Westair Reproductions Ltd', a leading supplier of museum reproductions in Birmingham, UK. As such, Jake, your replica of this unusual Newark, England coinage is not worth very much. A collector would probably pay up to a few tens of US dollars.
The coin in our picture comes from Baldwin's in London, and it is very genuine and very valuable. It is in average circulated condition (numismatic grade VF) and is worth about $1400 US dollars.
The English Civil War, 1642 to 1651, saw a series of cities besieged. The emergency coinage with NEWARK inscriptions are quite valuable. They come in sixpence (VI), ninepence (IX), shilling (XII), and half crown (XXX) denominations. All denominations and both dates (1645 and 1646) are worth about the same, except as noted below. Here are some typical catalog values:
worn: $400 US dollars approximate catalog value
average circulated: $1600
well preserved: $4000
Half crowns in good condition reach as high as $6000 well preserved.
Remember these are catalog values and must be adjusted according to the concepts outlined on our Important Terminology page.