What did I buy? A regular CJ EV1 or a teflon capacitor upgraded EV1

Hi-

Come here often to read but now I have an issue. I purchased a Conrad Johnson EV1 that the seller states had the teflon capacitor upgrade, but upon opening it up, I am unsure that the upgrade was done. Is there any way for me to tell? There are some off-white caps, and some whiter caps (with stickers identifying them) as well. There is also one black cap.

Should I return it? Paid well over a thousand and would not have bought it without the recap

Thanks in advance