1500's Silver Reliquary or Christian / Catholic Religious Pendant. Stunning!!
48 cm high.
Small bit of damage at 11 o'clock on the IHS side - the penultimate image just about shows it. I've just added another image that shows it better.
It's been suggested the painting is Edward V.
From a small but quality collection of Monento Mori artefacts I've just paid an arm and a leg for.