Wedgwood glass tankard/mug with blue jasper plaque?

I bought this blue glass mug/tankard as Wedgwood but have now noticed that the mark does not read WEDGWOOD as I assumed (new glasses required perhaps) bu appears to be WEDGKIN ??. Is this a Kings Lynn mark or a lookalike from another manufacturer. Any suggestions re. date of manufacture, designer or origin gratefully accepted. John

Looks like a normal - but indistinct - Wedgwood stencilled mark to me.

The glass is an older Stennett-Willson design for King's Lynn, but was later adapted for the Jasperware medals at Wedgwood by Arthur Bryant.