Lost a Navy Check Flat Cap in Dublin taxi, from SCRd to Burgh Quay - 30th July 2018!

I lost a Ted Baker Navy Check Flat Cap - in or around a Dublin taxi, while journeying from Harrington St, on the South Circular Road, to the Dublin Coach Pickup point on Burgh Quay; last Monday, 30th July 2018 @ approx 10.30pm. The hat was only four days old and was a valued gift; so I would very much appreciate its return, if at all possible - cheers!