i'd say it all depends on how sentimental your mother is towards these pipes. if these are the only things that your grandmother left her, I'd have to say no. Unless your mother doesn't like them in some way. Best way to find out is somehow bring up in a conversation how much they might be worth and if your mother would ever consider selling them. depending on her reaction would clue you in to how attached to the pipes she is. the less she cares about them, the less it matters what you smoke out of them (if anything).