Scavenged in Brisbane: an old wardrobe
2 sides about 6 ft by 14 inches (yep 1 piece),
top & bottom about 3 ft by 14 inches (355 mm but you'll lose some).
I'm thinking: they don't grow it like that anymore.
Will measure properly if you're interested.
Does have nail holes: "character"?

Want to trade for: open-minded on that, but something already 12-18 mm thick (for smaller boxes)
with great interesting grain, likely burl.