Need Help identifying late husbands Stereo components Infinity Beta speakers


In search of help, my husband passed away last November. His Stereo is here, and disconnected. Our daughters do not want, and I am not an Audiophile. I have pictures of the system. The Infinity Beta speakers are the old huge ones, and I have the original boxes, threshold preamp, and other parts. There is a plethora of remotes. Not sure where to start with identification and where the best site to sell is. Any help is appreciated. Thank you.
audiophilewidow
Sorry for your loss........
    I do have a close friend looking for beta's and those amplifiers if your interested. I just bought his RS-1b's. I am also interested in the threshold amplifier. I do not know a decent price though. I've seen Beta's go for up to $15,000 but those were in exceptional condition. I live in Maryland. My friend is in Indiana.,
     Sincerely,
                         Scott
Post removed 
 @audioglow. It looks to me you would have given less than dealers would have by your tone of your voice here. Why are you so mad?  
I appreciate everyone’s help with the stereo equipment.
This has been a difficult year. Have rehomed the not in use items from the storage room. As for the Infinity Betas they are still here, set up, completely connected to all the components as he left them. I did have dealers come out to the house, they all wanted to disconnect the system and piecemeal the components. As the Speakers are large none of the dealers wanted to take them to their storefronts.   while I am not equipment savvy, it would seem to me that listening to the speakers before buying them would be mandatory, and to do that the components are necessary. So it is all here set up, unplugged from the wall.
The holidays were very difficult for my daughters and I. As spring is upon us, it is time to make changes.
I have the original boxes for the Betas, and most of the components in our heated pole barn.
We are ready to sell the system. Obviously the speakers must be sold first, either with or without the components. As to price, multiple dealers came out to the house and listened to them. I now know how to turn on the system. Have been told “ they image beautifully”, all 3 dealers quoted $12-15K as expected sale price for the speakers alone.
It is time they were with someone who can truly enjoy them. I am not all that comfortable with having strangers to my home without the presence of my Local Sheriff.
If anyone is truly interested in buying, I am ready to sell.

Again Thank you all for your expertise and knowledge.