Nintendo was founded in Kyoto back in 1889. This means that the oldest items the company produced are now well over a century old.
Some of the oldest items in my collection, possibly the oldest, are these pieces of paper.
They are the remains of a box of one of the earliest sets Western style playing cards manufactured by Nintendo, from the early 1900s.
Five of the original six sides of the box remain. The top side, that functions as a closing lid, unfortunately is missing.