M9 Bayonet Doppler phases
The Doppler has 7 versions, each with its own paint index: Phase 1, Phase 2, Phase 3 and Phase 4, plus Ruby, Sapphire and Black Pearl. Right now Phase 2 is the priciest numbered phase in Factory New and Phase 1 the cheapest. Valve doesn't publish phase odds, so the phase is only visible on the knife itself or on a phase-tagged listing.
| Version | Paint index | FN from | MW from | Listings |
|---|---|---|---|---|
| Phase 1 | 418 | $827.07 | $1,029 | 80 |
| Phase 2 | 419 | $1,089 | $1,192 | 77 |
| Phase 3 | 420 | $845.87 | $983.58 | 90 |
| Phase 4 | 421 | $950.00 | $1,062 | 72 |
| Ruby | 415 | $6,971 | $15,576 | 20 |
| Sapphire | 416 | $4,862 | $3,491 | 24 |
| Black Pearl | 417 | $6,632 | — | 2 |
Rare M9 Bayonet Doppler patterns
Within a phase, the pattern seed decides how much of the blade shows the phase's best color. Collectors pay extra for the strongest examples: mostly-pink Phase 2s, mostly-blue Phase 4s and dark Phase 1s.
| Phase | Premium patterns | What collectors look for |
|---|---|---|
| Phase 1 | Dark seeds | A near-black playside that resembles a Black Pearl |
| Phase 2 | Max Pink seeds | Pink and purple across the blade, with little black |
| Phase 3 | Green and blue seeds | A strong green tone across the blade |
| Phase 4 | Max Blue seeds | Mostly blue, close to a Sapphire look |
M9 Bayonet Doppler float and wear
The ★ M9 Bayonet | Doppler's float runs from 0.00 to 0.08, which covers Factory New and Minimal Wear. Within such a narrow range the wear difference is barely visible, so phase and pattern matter far more than float.
Which cases drop the M9 Bayonet Doppler?
The M9 Bayonet | Doppler drops from 3 cases as a rare special item. In each case, any knife is 0.26% per opening and this finish in any phase is about 1 in 11,538, assuming every rare special item is equally likely.
| Case | Weekly drop pool | Chance per opening | Case price |
|---|---|---|---|
| Chroma Case | No longer drops | 0.009% · 1 in 11,538 | — |
| Chroma 2 Case | No longer drops | 0.009% · 1 in 11,538 | — |
| Chroma 3 Case | No longer drops | 0.009% · 1 in 11,538 | — |
About the M9 Bayonet Doppler
The ★ M9 Bayonet | Doppler was added in January 2015.
“This is the M-9 bayonet. Originally intended to be mounted on a rifle, it is also well suited to close-quarters combat. It has been painted with black and silver metallic paints using a marbleizing medium, then candy coated.”
“Getting lost in its color can prove fatal”









