The only real way to tell would be to check with the magnify glass like the boy said. You want to harvest when most of the trichomes (crystals) are cloudy and some amber, you don't want to pull when they are clear or the bud will be low potency. I picked up a 40x-100x powered field microscope from radioshack for like ten bucks.
I doubt he lollipoped it, I think low lower light and early stretching caused that naturally. I say this because of how the growth at the bottom is that of the lower plant and don't believe would be there had he done it.
Do you know the strain? bagseed I'm guessing since you don't know flower time.The bud looks good for the condition those leaves are in. What kind of light is it getting?
