The Zeebrugge Shield

[Brwbroon]

Last weekend I happened across this shield which consists of a chromed K/C Royal Marine helmet plate, a Q/C Royal Marine beret badge and a plate which reads "ZEEBRUGGE SHIELD, Presented to Marine Det, T.S. Hawk 1967, By Edw.P. Cassidy R.M.L.I., Lewis Gunner HMS Iris, April 1918".

I have had a look online and have found no reference to a Zeebrugge Shield.

Can anyone tell me please what this shield was presented for, whether or not it is correct or if it is a put together item.

For the sake of full disclosure, if it is decided that this item is of sufficient merit it will be offered for sale on this forum.

Eric