I am going to sell this rare item. The G21(MS-21) lens wasmodified by 宮崎先生 in Aug 2011with black metal barrel and M-bayonet.
The lens is about 95% new, elements are cleanwithout haze and marks, it comes with original rear cover and third party frontcover
Also, all certificates provided by 宮崎先生 and a original Contax21mm external VF in gold colour are included.
The price is $10,000, please pm me if interested,thanks!