Thank you, Jeff, for your response. Yes, I would guess around that time too, just based on a bit of research I did on the Harrod's font over the decades. The Harrod's in Buenos Aires opened in 1914, so it's certainly after that date. I was actually surprised I couldn't find reference to ANY type of china with their mark on it. It's a mystery... but, I love the piece -- and picked it up at a resale shop for less than 4 pounds. Even better!