Hi
Yes, I think it is quite modern, but as the 'hoards' they show look more like accumulations of surface and single detector finds than classic
hoards of coins current at a particular time and place buried as savings or to protect them from marauding invaders I am not surprised that the odd modern item might get into any particular lot.
For instance the right hand image they show for 'Silver coins and items' in the cleaned section contains both those and late
Roman material as well, stuff dating from the third century to the 1700's at least which you would never find in a single 'hoard'.
Best wishes
Alan