Hi guys
So I know why cards have low pops if there hard to grade with print lines and what not. But is this because they are all in a certain position on the sheets ?
Are all #17 typhlosions from neo in a certain spot that’s creating these print lines ? Same goes for yanma and a few other cards ?
Cheers
There’s many reasons for this of course. I’ll just list one or two and let others join in.
Why low pops on some cards?
Some cards were more desired by players so they got handled more, even if Sleeved and protected.
And
Some show light ‘pack scratches’ while others don’t. For example, Base Set Chansey or Hitmonchan compared to Gyarados and Zapdos.
Scarcity of gradeable copies due to the reasons stated above is the main one I think. But when it comes to cards like Dark Magneton from TR or Misdreavus from Neo Rev I’m interested in the reason as well. I think some of the uncommons like base 1st ed wartortle are due to positioning in the pack. They’re always in the back so generally more susceptible to damage before opening.
Yeh I was mainly interested in cards like typhlosion and yanma and others like that with a low pop. Was wondering if it was due to the way they were positioned on the sheets which causes them to get print lines ? Or if it’s just the holo pattern they have creating the lines
Not really sheet placement. Like yanmas and typhlosions were sprinkled all over the sheets in no more disadvantageous spots as any other cards.
So it’s just the holo pattern on these cards which makes them so hard to grade ?
So many different reasons out there for Low pop cards.
One that comes to mind for me is CoroCoro cards that you have to peel off a sheet. A lot of the time, when peeled, the edges some times come off with the card and leave edgewear.
No matter how careful you are lol
So people can mention how their Ex Ruby Saphire PSA 10 Taillow is Pop 2 when they’re trying to sell it for $40
Yeh shit like that annoys me “pop 1 psa 4 rapidash’ … wow must be worth thousands hey 
I work with statisticians so I was curious if there was statistical evidence that there is some systematic issue that plagues the #17 Typhlosion in particular.
First I needed to establish the overall PSA 9 : PSA 10 ratio expected for this card and compare it to the actual 9:10 ratio we observe. I took all english neo sets (1st and unlimited, holos only, not including shinings, minimum of at least 29 9s+10s graded in the pop report)
If you’re curious, approximately 24.6% of mint (9+) neo holos have graded PSA 10.
#17 typhlosion (1st ed) has 6 PSA 10s and 86 PSA 9s in the pop report.
Given these numbers I used a statistical test (binomial) which determined that it is extremely unlikely for this card have this 9:10 ratio by random chance (p=4.272e-05). Even if we assume 20 of the PSA 9s are regrades, we would still come to the same conclusion (p=0.002351)
This doesn’t say anything about what causes these cards to be so hard to grade but it is strong evidence that something systematic is at play which causes this card to be a pain.
I really enjoy your statistics! It can give so much information! And allows to see anomalies as the one you have mentioned.
Im trying to work out some percertages with the money I invest in Pokemon. When I purchase, in which collection I invest the most, the ratio buy/sell etc… And the end information is power.
A lack of demand in many cases. When something is rare or popular, the price will organically increase. When something is worth more money, people will submit more of them to PSA which will increase the pop reports. @jakew1992,