“Apple floppy chip for later Apple II, IIgs, early Mac”
Per http://www.downloads.reactivemicro.com/Users/Henry_Courbis/Pics/IWM%20Pics/chipinpackage.jpg - PLCC.
“theres 3 known revisions of the IWM: the prototype/ceramic one, the -A one and the -B one.”
(VLSI logo) 736VAI850T VF4060-1QC 344S0041B (M)(C)APPLE'82
License: “I hearby release the images and files on http://www.downloads.reactivemicro.com/Users/Henry_Courbis/Pics/IWM%20Pics/ under the Creative Commons Attribution 4.0 International (CC BY 4.0) License.”
Source: http://www.downloads.reactivemicro.com/Users/Henry_Courbis/Pics/IWM%20Pics/