Poorly written laws from a goverment that is mostly made up of barristers is deliberate not an error.
They can interpret such a law in any way they wish. That give them greater power than if the law looked written by someone over the age of 10....
Trying to proove an undated tulwar is probably 150 years old not 90 in an antique shop or market or if stopped driving home to the average PC plod should be interesting & probably rather futile though.
WW1 Austrian, Gertman & British trophys will be officialy legal to trade.
if your wealthy enough to have a top lawyer & barrister to pay experts, {such as ourselves?} to proove its over 100 years old your probably ok, if your on legal aid or low wages, your in trouble.
"Wish i were a rich man Yabba , yabba doo, all daylong etc. etc....."
Spiral