In the 24hr Ration pack issued to troops on D Day you would find 3 x chocolate bars.

Two of these would have been 45g bars which would have been a 10g raisin and 35g chocolate mix, the third bar would be a 45g bar of vitamin enriched chocolate. All wrapped in a greaseproof type paper. 

This school and display safe model has been based upon orignal measurements and 3d printed. Please note it is lighter than the original bars. But is a great visual representation of a bar.