I'd say a very careful repaint. The trumpeter is now in the uniform of the Royal Horse Artillery, with the exception of the red plume - correct for 4th Hussars, RHA should have white. In addition to the busby bag and trouser stripe, the painter has added a yellow belt and wrist braid, and a white cross-belt. Britains never made a trumpeter for their RHA sets, so this is a neat conversion.