(b) A preservation duplicate made by a photographic, photostatic, microfilm, microcard, miniature photographic, digital image or other process which accurately reproduces or forms a durable and unalterable medium for so reproducing the original, shall have the same force and effect for all purposes as the original record whether the original record is in existence or not. A transcript, exemplification or certified copy of such preservation duplicate shall be deemed for all purposes to be a transcript, exemplification or certified copy of the original record.