They are a group dedicated to doing good deeds ... but a bad deed has now been done to them.
Group member Louise Makin said: “The chain is 35 years old and is irreplacable. It has the names of all of our past and current presidents on it.
“We are devastated as it holds dear sentiments. Each tab is engraved and the bottom of the chain has a Lions International Badge so it is very distinct.
“We are worried the thieves may have dumped it so we would appeal for people to keep a lookout for us.”
The group is committed to helping the community and raises thousands of pounds every year for local charities and good causes.
Their main fundraising is at Christmas when they take Santa and his sleigh on a tour of the Holme Valley collecting money as they go.
This year they raised £5,143 and some of that total was quickly donated to the Calderdale flood relief fund.
The Lions always need new members.
Contact them via their website or Facebook page: http://lions105c.org.uk/holmfirth/contact-us/
Anyone with information about the theft should contact West Yorkshire Police via the main 101 number or Crimestoppers on 0800 555 111.
In unrelated investigations, police would like to speak to the people pictured in the image gallery below. The people pictured in the images may be witnesses as well as suspects. If you recognise anyone, contact police on 101 quoting the reference number on the image caption.