8mm in diameter by 25mm focal length.
Broadband anti-reflective coatings.
Wavelength range of 455-680nm.
Design wavelength: 488, 546.1, 643.8nm
Center wavelength (with coatings): 550nm.
Centration: 3 arc minutes
Surface accuracy: 1/4 wave at 546.1nm,
Surface quality: 60/40 scratch/dig 
Made with matched pair of crown & flint glass.
Manufacturer's original list price: $62.00