Some are better quality than others, you may be able to get a higher quality image than these found here, if you search the issue it came from.
More ads are periodically added. There are also different ads for some of the same models, and they too are in no particular order...
There are no G26 ads on this page, for the Grampian 26 advertsisments click here.
Right click any images below and select "save as" to download: