Emergency coin of half a king thaler of Beleg van Groningen; minted to pay arrears to the garrison; single-sided; rectangular emergency coin with somewhat convex edges. Front: double-headed eagle with coat of arms for chest under the letter G inside the inscription and pearl border. Reverse: blank; Groningen; Balthasar Wijntgens; Jan-1577 - 7-Feb-1577; silver (metal); striking (metalworking); h 3 cm x w 3 cm x w 16.62 gr