1870's Six Tap Beer Pull from Dublin

I am hoping to have these antique beer taps (pictures attached) valued as I am looking to sell them. I have had them for around 11 years and purchased them after they were removed from a previous venue that had closed down. They are extremely rare. Information about the item is in one of the attached pictures. I look forward to any information as I have struggled to find anything else like them with my online search.