As you say, it's not easy to take good pictures of holograms. All digital cameras have a stack of filters over the sensor (IR, AA, etc..) which react impredictably with different types of holograms and the angles at which the photo is taken. At naked eye, this hologram seems gold, if looked almost perpendiculary, but it turns greenish at certain angle of view.
Those photos are from the spare and unused QY6-0085 printhead for my Pro-10s. It was purchased at C1-supplies ( Germany ). You'll have to take my word for it, but this is a genuine Canon box. You may argue that they sell counterfeited products, but I'm quite certain that they don't. It isn't the first time I buy there and their service has been always flawless. I'm sure that other people here who had dealt with them will say likewise
I think that the photos uploaded by @Puzzled of that super cheap printhead aren't conclusive, Only the real condition of the article will tell us for sure.
I have some New Old Stock Canon OEM cartridges, The packages have the same hologram sticker as the printhead boxes. I have also tried to scan and photograph the holograms, but it is impossible for me to get a good image. So I agree with Artur5 that you cannot determine from a photo if the hologram is genuine.
I think C1 supplies is a regular dealer of new genuine Canon spare parts. In 2015 I bought probably the last new QY6-0061 in Europe. It has worked well in an iP4300 for more than 6 years but has now sadly started leaking magenta into yellow and cyan. I can still use the printer as one printhead cleaning clears the colours, but I wish I could buy a genuine new printhead for the printer.
OP's hologram looks sort of like the real USA Canon hologram below. It all depends on the angle/lighting, but appears to be similar. Zero gold. But the real one is attached to a Canon battery, not packaging, has different dimensions and no central stripe of translucency. Even the Sine Waves are different, but this might be due to viewing angle.
But is this the same hologram that would be used on print head packaging or a different Region? (OP in England/Europe?)
Canon USA states the following is the hologram used on packaging.
The hologram on my OEM Maxify 2200 XL cartridge packaging looks like this image as I rotate it under light. It also will seem completely gold at a specific angle to the light. Note that at certain angles the bottom and top stripes are black +/- superimposed Canon/Genuine/Sine Waves. It does not look like your hologram at all. Does this mean your hologram is a counterfeit?
The holograms displayed on Canon Asia also do NOT look like your hologram. Hmm, your hologram is looking a little suspect.
You did not indicate what your hologram is stuck on and how long ago it was purchased. Even though the Canon Europe images for the "OLD" hologram do NOT look like your hologram, I would accept that your hologram was an earlier version of the "old" version above. Otherwise, you were scammed.
None of my MP830 print head boxes have holograms. These were purchased directly from Canon Sales in the USA. Canon feckin scammed me!
OP's hologram does not look like your print head hologram or my cartridge hologram. None of ours looks the same. Is OP's hologram a counterfeit? Given that holograms have changed over time, yours being a obvious example, I cannot say for certain. Not enough information.
So, @Artur5 's recommendation to check the print head for wear before installation may be one way to tell if it is a refurb.