The Brooklyn CPU chips

A sleeve of chips, marked "MICROPROCESSOR (PROTOTYPE 65SC816) BROOKLYN" was donated by a former Apple employee. On the sleeve is written "Brooklyn" and the employee said that these were the only surviving artifacts (16 bit 6502 prototypes) of the never-created Brooklyn Apple II, meant to be a "bridge between the Apple II and the Macintosh". This system was to support a mouse, GUI and high resolution color graphics.

Clarification From Steven Weyhrich webmaster of Apple II History

Now, there was at one time an Apple II that was code-named "Brooklyn" (for Brooklyn bridge, a "bridge" between the Apple II and the Mac), and MY understanding was that this was from the era BEFORE the IIGS was created, when Apple was half-heartedly looking at an improvement in the Apple II line beyond the capabilities of the IIe. See the section called "The Apple IIx" in Chapter 10 of the Apple II History (https://apple2history.org/history/ah10.html).

Now, if someone who worked at Apple says this was from AFTER the IIGS was originally built, it is possible that he is right and I am wrong; however, memories can get fuzzy over the years, and much of  the material I have collected was happening at the time the articles I collected were written, so should be correct. The only real successor to the IIGS that nearly appeared was a product that might have been called the Apple IIGS Plus, which would have had an internal hard drive, and internal 3.5 floppy drive, and possibly some improved sound capabilities. This project was killed at the last minute by Apple before its 1991 satellite-linked user group meeting. (See the latter parts of Chapter 11 of the History, https://apple2history..org/history/ah11.html).

Again, TO MY KNOWLEDGE, there was never any effort to create a 640x480 graphics screen for the Apple IIGS; it would have significantly interfered with the older graphics modes that the IIGS supported. A product called the SecondSight card appeared during the mid-to-late 1990's, which made it possible to use a VGA monitor with an Apple IIGS, but there was not sufficient demand for it, and it didn't get much penetration in what was by then a dying market.