Where has Google found the £1.00 value for the penny black? Is it Google moving beyond the mark-ups too?

[madcow78]

Hi guys,

I am curious, so am wondering something about the Penny Black SERPs.
Apparently Google shows a value of £1.00

From where does it come from? It's not the value

The Wikipedia page hasn't any mark-up about it, actually it has the Price value mark-up of 1 penny

Among the rare stamps, also the Inverted Jenny shows a value

But it's clearly taken from USPS and it's the cost of a new version of this rare stamp

Indeed, the mark-up matches that value

I've been looking on-line for a new version of the Penny Black, but couldn't find anything. 
The only small piece of information that I've found to correlate one pound with the Penny Black is on the Wikipedia page, but the point is: is Google able to strip those information from that piece? It's not a mark-up, it's not a number and mostly it's not a simple sentence like "The penny black cost was of £1.00" It reads "One full sheet cost 240 pennies or one pound sterling".

Is it Google moving beyond the mark-ups too?

Thanks,

Pierpaolo

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[Dr-Pete]

Yes, Google is going well beyond mark-up with the new v2.0 answer boxes. They're trying to extrapolate answers directly from indexed content. This is essential if they're going to expand the Knowledge Graph, but it's also an aggressive move, and they're not all that good at it yet. Unfortunately, there's no great way to control when/how/what they show.

So far, all of these answer boxes seem to come from page 1, so you have to have enough authority to rank on page 1. After that, though, it's a pretty crude matching process to on-page keywords. The matching is contextual (since the Hummingbird update powered more of that), but it's still pretty basic keyword/concept matching.