Gift deed executed in water mark paper 20 years ago

respected experts ,

My father had gifted my wife some amount ( 1 lacs ) on govt official water mark paper in 1989 . She utilized that amount at different different places like ( fd , land , gold etc ). Now my father is no more and now a days water mark paper is not used to make a gift deed . Sir the gift deed what i have is still valid or not ? Still i have that deed . Will it be ok ?

Suggest me please