I have an FD Vivitar 28/2.8 lens that I've used extensively lately. It works great and is in great condition with only incredibly light paint wear in certain areas such as the focusing ring and bayonet mounting ring. I know that an "off-brand" might be off-putting but this is an incredibly sharp example of what Vivitar could do with a serial number of 28922xxx. I can provide pictures of the lens and sample images upon request, if you're interested.
Includes front Vivitar cap and back cap - let me know if you're interested.