With all respect, how on earth can anyone advise you on how to sell speakers that you have never heard? I submit that your claim of "I don’t want to risk getting attached" as an excuse for not listening to them will be read by many as: "I tried to play them but they were fried." Further, your statement indicates that, if you so desired, you could pay for these speakers yourself and so fund your father's funeral expenses.
If my speculation is wrong, please accept my apologies. Until then, listen to what they sound like and report back to the board. You may well have some diamonds in the rough. I doubt it though, as after sixty years or so even the best drivers will show some wear and tear and consequent degradation in sound from when they were new.
Still, your father’s corpse and the funeral home handling his burial cannot wait for ever. I wish you all the best in covering those expenses, however unlikely it may be that you will find such assistance on this forum.
In the future, when your next relative or acquaintance dies, I suggest being more upfront about what it is you are trying to sell and not trying to use tear jerking tactics to market whatever it is you have on hand.
