RARE WW1 BRITISH SUFFOLK REGIMENT OFFICER'S CAP

This is a hard to find WW1 British Suffolk regiment Officer's cap, I've been informed the only other one aware of is in a museum, The cap still maintains its chin strap and cap badge, the sweatband looks like it has been removed for what ever reason, sometimes we has soldiers would remove the internals of caps as its more comfortable to wear, on the top there is some nap missing but doesn't take away how rare this cap is.