[HN Gopher] Process for mass producing Japanese 500 yen coins ___________________________________________________________________ Process for mass producing Japanese 500 yen coins Author : geox Score : 22 points Date : 2023-11-25 16:16 UTC (2 days ago) (HTM) web link (theawesomer.com) (TXT) w3m dump (theawesomer.com) | netsharc wrote: | Man, 60fps and the shaky hand while panning/zooming (and it's a | lot of those things) make this a motion-sickness-inducing video. | | But slowing it to 0.75x seems to work. | nlh wrote: | Ah ha now we're speaking my language! :) | | Fun fact: "Mint" condition coins actually are measured on a | 10-point scale (from 60 to 70...because...reasons...as part of a | broader 70-point scale also because reasons). | | In the video, note how the finished coins are unceremoniously | ejected into a big bin straight after striking. During that | process, many of the coins get little nicks and bumps and | scratches. This has been the way for hundreds of years. | | Because of this, most of the mass-production coins out there are | far from perfect. So even among a group of coins literally hot | off the presses, truly perfect ones (graded 70) are super hard to | find. In the world of vintage coins (non-modern era - generally | pre-1900), perfect 70s simply don't exist, and 69s go for | $hundreds of thousands (or $millions). | | This is different for modern coins, particularly for issues where | the mints are marketing them specifically for collectors. 70s are | easy to find. But for the true workhorse mass-market coins, | perfection is not the norm. | TacticalCoder wrote: | > But for the true workhorse mass-market coins, perfection is | not the norm. | | Yup, I was very disappointed with the video in TFA. | | Here's a proper factory minting a proper coin: | | https://youtu.be/sM4lyJdCO_E | notpushkin wrote: | [video] | runj__ wrote: | 500 yen coins really do have a weight to them, they feel valuable | and can almost buy you a proper lunch. It's a shame most vending | machines and subway ticket dispensers only accept the old 500 yen | coin though. | blamazon wrote: | Of potential interest, the source YouTube channel is prolific and | covers many Japanese manufacturing processes: | https://youtube.com/@processx | beAbU wrote: | This video came up in my yt feed a couple of days ago. I watched | the rice cooker video that was also hn front page a few weeks | back. And now The Algorithm thinks I like Japanese undustrial | manufacturing videos. I'm not complaining. | | The thing that confused me though: why punch out the middle, only | to put it back in again? It doesn't look like they're made from | dissimilar metals like Euros? | frud wrote: | Some are made from dissimilar metals. https://www.coin- | database.com/series/japan-47-prefectures-co... | kazinator wrote: | I carry one of these things. I sometimes use it for shopping | cards that normally take Canadian loonies ($1 coins). ___________________________________________________________________ (page generated 2023-11-27 23:00 UTC)