Curious to find a group like that. You have British pennies and halfpennies but, as a group, they won't relate to doughboys from WWI. One of the pennies looks to be from the 1930s. I can't read the dates but pennies after 1936 have Britannia's helmet further away from the rim of the coin and also have a lighthouse on the horizon behind her, like one of your examples.
In that condition the numismatic value is pretty much nil I'm afraid, but who can put a price on the story they have to tell?