This is a very old unused black and white/sepia postcard of The Islands from Mulia, Loch Lomond. I don't know the exact age of this card, but it looks like it is from the very early 1900s. It is a Valentine's Series Post Card, numbered 34549 and the card is in very good condition – no creases or obvious marks (other than a couple of very minor ones), with only very slight scuffing to some corners.
(E86)