This is a Nikon Micro-Nikkor 60mm F/2.8G ED AF-S IF SWM Lens (Made in Japan) with Nikon L1Bc filter. It's like new and 100% working with my Nikon D3X.
Lens Type: AF-S 60mm f/2.8G ED
Designed for use with Nikon FX and DX digital SLR cameras including the D3X,D3s, D40, D60, D80, D90, and D300...
Focal length: 90mm effective for APS-C sensor cameras
Ideal for closeup and macro photography
Minimum focus distance: 8 inches