Thank you so much for your time and advice!
I really try my best to find the lost piece , I already ask the seller if he can find the original owner owner of those speakers because the estate sale person told me the original owner sold the head separately for a good amount of money but I told him those speakers useless without each other !
And he agree but he said let me see if I can hold with original owner again and ask for more info
Hopefully he can find some info
Thanks again