5d u/m mnh stamp (SG835) featuring the Penny Black and originally issued to mark the Philympia 70 Stamp Exhibition. Wording 'Philympia 1970' has been marked through and the new publicity overprint 'London 2020' added - very unusual!
// Override default values of shop.strings for each template.
// Alternate product templates can change values of
// add to cart button, sold out, and unavailable states here.
window.productStrings = {
addToCart: "Add to Cart",
soldOut: "Sold Out",
unavailable: "Unavailable"
}