By Shivon Watson & Zoe Delaney Antiques Roadshow viewers were left amused during the latest episode when a guest brought in a “Muff Chain” to be evaluated. The beloved BBC show aired another episode on Sunday night (March 17), with presenter Fiona Bruce and her team of experts visiting Londonderry for St Patrick’s Day. A guest on the show presented a unique chain that had been in her family since the 1950s, originally owned by her aunt. When expert Joanna Hardy asked about the chain’s history, the guest admitted she wasn’t sure. Joanna revealed: “It’s nearly 200 years old! It’s a belcher link …