Vintage mini used/missing leather pocket address book. (E4b)

Vintage mini pocket address booklet. MISSING PAGES/USED. On the front it reads 'Addresses' 10.3cm long 7cm wide and 6mm thick approx. Condition: Used. Wring on 1st/last blank page. Nothing wrote in the pages that remain. However the A,B,I,X & Z sections have been torn out and are missing. On the 1st blank page impart from numbers it mentions 'Niabini Estate Naivasha' which is in Kenya so perhaps this mini booklet at some point has been on an excursion there or maybe just the previous owner or friends of the owner went there. No other info.

eBay