I'd call it a solid F-12; it might be a stretch to go F-15. Without a full breastplate it can't touch VF although many examples with this much wear are represented as VF on
ebay.
The color looks pale and washed-out to me; the very light gray fields contrasted with the dark stuff in some crevices suggests a light cleaning was done at some point. Still, its a presentable example of a semi-key date.