Rampant lion and thistle plaid brooch. 
Approx 115mm diameter. 
Looks to be stay-bright material, but is heavier than others I've seen, so not sure. Brass lion.
Not for the fainthearted to use as it is heavy.

£45 +£3.50 p&p. 

Rampant lion & thistle heavyweight plaid brooch

£40.00Price