I may be able to help with a manual for the 58 set. What is interesting is your pic
http://www.mapleleafup.net/forums/at...6&d=1496413429
of the 58 set. It's the lid for the battery box but quite unlike the 'battle battery' shown in the manual. Your set is either a Mk.1* or Mk.1* Tropical and the lid would suggest those variants of the 58 set had a different (probably waterproof) battery case of a type I've never seen before.