I've been slowing working my way through accrued memorabilia from my parents' home. My father worked in radiation dosimetry and that is apparently him on the first page of a leaflet below, modelling a natty belt and badge loaded with radiation detectors.

The remaining two pages of the leaflet go on to document the working of the system.

The remaining two pages of the leaflet go on to document the working of the system.
Last week, while investigating the contents of an old ammunition box at my parents for share certificates, I found the following:

The postcard reads (in my father's handwriting) "Personal Radiation Dosemeters either designed by John Dennis or in whose design he was involved".

The card reads (again in my father's handwriting) "Centre pearl has been irradiated in a nuclear reactor. Given to John Dennis when visiting Japan 1952."
I don't know why I didn't photograph it, but there was also a medal in the box with a boxer on it. Dad's card with that noted that it had been presented to him for boxing. Underneath he had written "John lost both the fight and his front tooth". Weirdly it had never before occurred to me to wonder why my father was missing a front tooth.

The postcard reads (in my father's handwriting) "Personal Radiation Dosemeters either designed by John Dennis or in whose design he was involved".

The card reads (again in my father's handwriting) "Centre pearl has been irradiated in a nuclear reactor. Given to John Dennis when visiting Japan 1952."
I don't know why I didn't photograph it, but there was also a medal in the box with a boxer on it. Dad's card with that noted that it had been presented to him for boxing. Underneath he had written "John lost both the fight and his front tooth". Weirdly it had never before occurred to me to wonder why my father was missing a front tooth.