Nobody's even guessing, what a stumper. Here's a clue as to what is right side up. Now see if you can guess the flag that is flown upside down. https://web.uri.edu/maple/wp-content/uploads/sites/1163/acer-rubrum-scaled.jpg
https://web.uri.edu/maple/wp-content/uploads/sites/1163/acer-rubrum-scaled.jpg