Hydrogen Helix
The Hydrogen Helix release, with software-history details carried into the coin and hologram.
Exactly 200 maximum across all finishes. The original post’s comments and mintage table allocate 25 antique, 75 silver, 70 reverse mirror, 13 gold plated, and 17 reverse-mirror gold plated.
Historical market snapshot · 2020-11-25
1 BTC = $18,732 · 1 LTC = $82 ≈ 0.0043711 BTC · 1 XMR = $129 ≈ 0.00689457 BTC
CoinMarketCap daily snapshot; approximate and not an appraisal. Rate source
1 BTC = $18,732 · 1 LTC = $82 ≈ 0.0043711 BTC · 1 XMR = $129 ≈ 0.00689457 BTC
CoinMarketCap daily snapshot; approximate and not an appraisal. Rate source
Coin and set specification
| Denomination or variant | Metal / format | Maximum mintage |
|---|---|---|
| Antique finish | 2 troy oz .999 silver | 25 |
| Standard silver | 2 troy oz .999 silver | 75 |
| Reverse-mirror silver | 2 troy oz .999 silver | 70 |
| Gold-plated silver | 2 troy oz .999 silver | 13 |
| Reverse-mirror, gold-plated silver | 2 troy oz .999 silver | 17 |
Set composition
A 1.008 XMR, 2 troy oz .999 silver coin mounted in a 304 stainless-steel housing with tempered glass. White or rainbow steel housings could be paired with any coin finish.
Original offer prices
| Offer | As posted | Historical equivalent | Note |
|---|---|---|---|
| Base package · silver + white steel | 4 XMR | 4 XMR ≈ 0.0275783 BTC ≈ $517 | |
| Reverse-mirror finish surcharge | 0.17 XMR | 0.17 XMR ≈ 0.00117208 BTC ≈ $22 | Seller also listed 0.0011 BTC |
| Gold-plated finish surcharge | 0.85 XMR | 0.85 XMR ≈ 0.00586039 BTC ≈ $110 | Seller also listed 0.0055 BTC |
| Antique finish surcharge | 0.65 XMR | 0.65 XMR ≈ 0.00448147 BTC ≈ $84 | Seller also listed 0.0045 BTC |
| Rainbow steel housing surcharge | 1.7 XMR | 1.7 XMR ≈ 0.01172078 BTC ≈ $220 | Seller also listed 0.011 BTC |
| Serial selection or custom engraving | 0.85 XMR | 0.85 XMR ≈ 0.00586039 BTC ≈ $110 | Per coin; seller also listed 0.0055 BTC |
Denomination at the post date
These values describe the loadable face amount, not the price of the metal collectible.
| Item | Face amount | BTC and USD equivalent on 2020-11-25 |
|---|---|---|
| Coin denomination | 1.008 XMR | 1.008 XMR ≈ 0.00694973 BTC ≈ $130 |
Archival notes
- Maximum mintage is 200 total—not 200 of each finish. The five stated finish allocations are 25 + 75 + 70 + 13 + 17 = 200.
- The base price excluded the XMR loaded value. Paper certificates were replaced by digital records, with an optional metal certificate.
Recovered photographs
23 image files from the first post were recovered and re-hosted here. Select any photograph to enlarge it.
Sources
- Original Hydrogen Helix sales thread · Bitcointalk topic 5293128
- KIZEKRA series and comics index · Bitcointalk topic 5305356
- CoinMarketCap historical snapshot for 2020-11-25