Physical description

Cigarette case probably made from oval shaped Aluminium tube (or similar aircraft construction material). The case has a removable lid which slides over an inner tube (see 'photos). The oval shaped ends of the case are made from a perspex (?) material or similar. The perspex piece fitted into the lid has four Japanese (?) characters marked in red.
This item is possibly trench art manufactured from aircraft parts.

Inscriptions & markings

There are four Japanese (?) characters written on lid however not yet translated.