Nice badge, someone said it was a South African Irish regiment but with Quis Seperabit across the bottom makes me think it was RIR or RUR collar. Never seen this harp style for the above mentioned regiments before though. I saved a pic to my computer but I don't know how to transfer to the forum. Re the buyer, I think I know who it is now and I have his book on Anodised badges, Too bad it isn't signed by the author
