As a quick follow up to my previous post, I did end up writing to the owner of Sonicraft and unfortunately, he doesn't possess any of the original full sized files of the MR-70 because they were shot by a professional photographer who only gave him the web sized shots for the site.
But...he did offer to take some pictures of it when he gets a chance to do so and was also kind enough to offer up access to other shots from his site which he does have the full sized originals of!
He seems like a really nice guy and is also an aspiring photographer in his own right, so I'm expecting 1st class shots from him...again, when he gets the opportunity. He's a busy guy.
Anyway, for now, I've done a bit more picture hunting and came across the earlier version of the AG-500 which is still stereo but was an all tube affair from the early 60's but is said to be an excellent unit for both commercial usage or as a higher end home use unit!
This one is called the PR-10 and I managed to find a decent good sized pic of it from an expired ebay sale in England. It just needed a bit of perspective correction and a tiny bit of digital scuff remover...
View attachment 89149
right click to download...
Cheers!