Uganda: Stamps

not a good morning  -  hinge  pulling and wading through old albums from recent  boot sale  excursions - one  of which stunk  of old  cigarette smoke which I have treated  before with proprietary granules within a closed box - it  can take a long time, but it's one of the worst smells - truly revolting - and  I say that as an ex  smoker.                Unfortunately, even out in the open air in a  field I didn't smell the problem.              What do  others  use to remove  this smell, assuming occasionally we all get a few like  this?
The worst sort of hinges are those small pieces of Cellotape  - they leave a residue which  darkens  the stamp, permanently - a write  off.      I even had  one hinge  made  from a  piece of a  calico type material.

The  picture  attached  is  just a reminder - mostly to me - that Cents  and Shilling do co-exist within a single country - though it's  easy to forget and think two separate currencies must be  a mistake - in 1920 the currency for Kenya  and Uganda became 100 cents  equals 1 East Africa  Shilling, and  with high values in Sterling denominations (£).                          These two George  VI stamps  -  still on the same original piece  -  are: ............

The 30 cent value  -  The Nile Railway Bridge at  Rippon Falls, Uganda  -  once  thought to  be the source of the Nile - black and dull violet blue - SG 141 from May 1938 and first issued May 1938 ( same design used in May 1935 for  George V).

The one shilling value -  Lake Naivasha, Uganda (highest lake in the Great Rift Valley - so we  might have been there five million years ago) - black and  brown - SG 164 - first  issued February 1952.

They're both  attractive  stamps and likely  very common.      P.S.    Just realized - these two represent almost the first and last issues of George VI (for Kenya and Uganda), and to be on the same cover is a  substantial  coincidence.
P.P.S.  -  In  case I've confused people, just to clarify ....   the shilling showing here - whilst carrying that name - is unrelated in value  to  the U.K. shilling.