The main problem here is that if it was a privately commissioned box and not a Soho product, then it would be almost impossible to date based on the box design, which presumably would be at the whim of the person having the work done and the location. A combination of early and late Soho pieces suggests a later assembly date than time of issue, unless Peck is wrong with the chronology and these particular types were issued concurrently. What is the contents of this box and how does it compare with other examples? i.e. is there any consistency of contents which would lead you to deduce that the types were issued concurrently? We know that 'Late Soho' is a fairly elastic term covering a prolonged period as the DH11 halfpennies ascribed to it show a degree of recutting, with some Peck numbers showing early strikes only. The silvered P964 for example is early, whereas the P966 brown gilt is later.