Chief Editor - opticallimits.com
Doing all things Canon, MFT, Sony and Fuji
06-02-2019, 07:04 AM
(This post was last modified: 06-02-2019, 07:31 AM by toni-a.)
In fact it was published as a classified ad on yahoo, the seller was asking little money, so it seems more like a stolen or found item.
So most likely it was a real prototype unless it was all set up by Sony which seems unlikely
https://petapixel.com/2019/06/01/it-looks-like-someone-stole-a-sony-prototype-lens/
Those zoom and focus rings do look fake though. As if printed via a 3D printer.
Chief Editor - opticallimits.com
Doing all things Canon, MFT, Sony and Fuji
Prolly an early prototype anyway, or even just a physical mockup.
You can buy it, if you like: https://www.dpreview.com/news/3911050659/sony-200-600mm-f5-6-6-3-g-oss-fe-lens-prototype-appears-on-auction-website
SONY 200-600 along with Sony 600mmf4 are almost official now, so no it is not fake