Is the goxxed coin solid silver or plated?
It's plated. There are only 51 .999 silver coins (#1-#21 and 30 unnumbered), all without plating.
Actually the other way around for the numbering

Here is link to original post from BTS:
https://bitcointalk.org/index.php?topic=508380.msg49774649#msg49774649"Shout out to minerjones for poking me to get these numbers out finally.
After double checking my notes the mintage is as follows these numbers include error/smudge/unique spilled mustard (lol) coins:
180 'original' - silver plated, unnumbered
20 pure silver 'original' - unnumbered
31 pure silver numbered (numbered from 21 onwards)
120 silver plated commiserative numbered
120 gold plated commiserative numbered
Total: 420 plated, 51 pure silver
I'll be first to admit my book-keeping was not stellar on this, so apologies for any mix-ups. But these are checked against my notes and manufacturer orders.
Please also note that numbers have been rounded up as approx 50-80 original plated and silver/gold plated and commiserative were never sold and will be melted down when I buy a new smelter (last one shorted out and have not purchased a new one, crappy chinese made).
Bringing the actual plated amount in circulation to closer to 350-370
Open to any corrections but I believe these numbers to be fully accurate.
Will update the thread with the 'melted/discarded' coins when they are turned into ingots or something. I'll provide a video of it for veracity, but this may be months down the line yet, like I wrote, need to source a decent smelter. Have my eye on one from the UK..."