Holy Communion Travel Box with original priests writings from 1847

I am having a hard time getting a value for this setup. I seen one sell for $500 on ebay another is listing right now for $300. Mine has a log book from two priests who used this box and all their writings and documentations. I am wondering can you even value those writings or would that be something the vatican would want to obtain? I don’t know so that is why I am here asking. Thank you for any help with this

My box is in a safety deposit box so I have no access to get a picture tonight the picture I am including is one off ebay looks exactly like this one but like I said I have the books and writings with mine in a plastic bag in the box. So it’s been protected for many years this way…surprising to me to see the writings of these priests which I believe to be sacred. They should not be made public I believe without permission from the priests of the church of origin. this box is from the mid west usa.