It was obviously an Apple ad, but it was speaking directly to Amiga users. It totally blew my mind. After a few Google searches using quotes and verbatim text from the ad's copy, I found it.
It was in the British magazine CU Amiga, Issue 086 from April 1997.
It's a two-paged spread.
Taking a closer look, I was stunned at the detailed understanding and knowledge the ad conveyed in addition to the thoughtful point of view. It was as if it were written by an Amiga fan at a funeral, trying to softly encourage survivors that the writing was on the wall, but it was going to be OK.
One day we may see the rebirth of the Amiga with a PowerPC processor and other new features to enable it to compete again with today's systems. Sadly though, more than two years since Commodore's demise, very little of substance has happened. We've seen prototypes and promises, but that's about it...
Perhaps some can wait for the final outcome, but if you need more performance, without paying the earth - and you need it today - there's one real alternative to consider now...
Only Apple can offer you both desktop and portable computers that truly match the case of use the Amiga brought to your desktop. Affordable Apple Macintosh systems have PowerPC RISC processors with thousands of off-the-shelf programs available in areas where the Amiga was previously so strong.
And, if you need to have the most compatible of all computers, Macintosh is currently the only system that can run MacOS, DOS and Windows applications via optional DOS Cards or SoftWindows.
I can't believe this was written - let alone sanctioned - by anyone in Cupertino. The design language is really spot on to have been pulled from Apple marketing. But the copy? No way.
Taking a look at page two, we can see this is obviously from a UK Apple dealer - quite possibly one that used to sell Amiga computers, too.
Pretty fascinating bit of tech advertising history, even if from a regional perspective. You can take a closer look for yourself if you'd like over on the Internet Archive.