Ooh, is it a button that 'un pops' Jimmyt? 'Cos if it is, it's something I haven't seen for years. A bonafide marching flat cap. Worn by those who went on marches (like the local Orange men or Knights of St. Columba, or indeed, football supporters) the button could be replaced by a pompom in the appropriate colours, making it a hat for all occasions.......