Nickel-plated Zink (?) 28.7mm.  G.W.R in centre, * REFRESHMENT * DEPARTMENT above and below.  R. Blank, apart from a beaded border.  VF

From its style and the materials from which it is made I would date this token, or more likely a ticket, to the period 1870 -1910.  Purpose? Possibly a ticket given to an employee who was entitled to a meal because of working extended hours.