Recently I discovered a funny thing about Phantom FGR.2's 'middle canopy': some have this part of the canopy as a window, but others have it in solid metal with a periscope or something like that poking through.
XV430, October 1982:
![Image](https://live.staticflickr.com/65535/50814817686_725f5cd6ed_c.jpg)
XV480, July 1985:
![Image](https://live.staticflickr.com/65535/50814817671_efe95aae00_c.jpg)
Can anyone tell me the background of these different versions?
Cheers,
Rob