Lost Black courier bag

Left my black courier on the 3.25pm train from Cork to Dublin last Friday the 16th of June....The courier bag has "Legal Express" printed on the flap of the bag,also a black bicycle helmet attached to the bag..The bag was full of cycling clothes,cycling shoes and Orange Rab rain jacket, 2 power banks,Transatlantic Way goodie bag..Its the bag itself that's most important. It belonged to an ex Dublin courier who passed away a couple years ago so the bag is priceless in sentimental value....If any can help out,it would be really appreciated?? Thanks