Gunman's Western #6 is a digest-sized comic published by Page Publications and features cover art by Keith Chatto. This is new cover art for an issue which had previously been published by Page as Shotgun Western #2 and Fast Gun Western Library #2. I expect there are other editions of this issue.
The contents of this issue are a little unexpected. Amongst the Marvel features are stories originally published as Dell features. Furthermore, the issue ends with a single page feature signed by Maurice Bramley: