Where the defendant bases his defence upon a document or relies upon any document in his possession or power, in support of his defence or claim for set off or counter claim, he shall enter such document in a list, and shall produce it in court when the written statement is presented by him and shall, at the same time, deliver the document and a copy thereof, to be filed with the written statement.
(2) Where any such document is not in possession or power of the defendant, he shall, wherever possible, state in whose possession or power it is.