The growing collection.
It's happened already! I have a case to solve.
Yesterday S.B. and I went beachcombing in nearby Blandford where I found a giant piece of sea glass with a bordered triangle insignia embossed in its centre. I thought it may be the bottom of an old Vicks Vaporub bottle, as the company has a similar logo, but the border around the triangle on this one is wider and flatter than those on an antique Vicks bottles.
Can you see the triangle mark?