GPO posters is a massive subject and can’t easily be summarised in one blog
A lot of information can be gleaned from the recently rehoused archive
I’ve not been yest but it looks awesome
Or their bog (which stopped in 2015) https://postalheritage.wordpress.com/tag/gpo-posters/
So check out those sites
Most of the great mid century artists have contributed along with a number of very good ones
Pieter Huveneers springs to mind (sadly he passed away in June)
Another one is Karo
Then there is this delightful effort bu Lewitt – Him
I could go on !!
A lot of the material is ‘Nanny State’ : pack correctly, don’t be late, address correctly etc. Some of the advise is slightly bizarre which gives me an excuse to show this one again
The value of these posters varies wildly, this is mainly due to the saturation of small lots being sold at each Onslow’s auction. The supply seems endless : just look at their catalogue archives !!
Now to the Sales pitch :
These items going on sale shortly, I have decided to mix in some repros with the original stuff this time (hope you don’t mind!!)
These are the originals