The LCD VSI was fitted to provide a TCAS display. It does display VS information but only +/- 6000fpm. The original VSI is a strip instrument to the right of the ADI and when the pointer hits full scale on the strip at +/- 6000fpm, there is a yellow digital display which reads to 10,000fpm on the up stop and 30,000fpm on the down stop, as Bellerophon quite rightly pointed out. Here's a better picture:
