its in the shape of town crest very similar to bury - its blue and white with a red lion standing on top then aa knights helmet underneath on top of a shield which is split into 3 with a submarine in the top part and what looks like a red rose in the bottom right and some sort of winged insect in lower left -- I have 102/104 and they are driving me insane
Could it be Barrow in Furnace or Workington ??? both associated with Submarine building especially Barrow.