Before going to the trouble of scanning/photographing everything, why not just put up a list of what you've got and we can eliminate anything that is never going to be of any value. The 1946 & 49 threepences are both representative of scarce years, so unless they've been run over by a train will have some value as will the KN pennies. The maundy 3d you mention was actually a regular issue at the time, and unless virtually uncirculated will probably be worth little more than its metal content. And a final word of warning; don't raise your hopes too high as to value, most accumulations like this, although interesting are rarely worth a huge amount.