Strange Cleaning Lines On This 2krona 1907

I would say it's wiped in one direction. If the dies were polished before striking, it's pretty hard to explain why the portraits have the same lines.

Some additional photos

Assessment of Polishing on Your 1907 2 Krona
Direct Answer
No official proof version of the 1907 2 Krona was issued for collectors, and business-strike planchets were not mirror-polished at the Uppsala Mint. Any fine, parallel polishing lines on your coin's fields are almost certainly the result of post-mint handling or aftermarket cleaning.

Why a 1907 2 Krona Wouldn't Exhibit Factory Polishing
- Official production
- Business strikes were minted on annealed silver blanks with a matte to satin finish.
- Dies were lightly dressed to remove flow-lines, but fields were not buffed to a mirror shine.
- Proof and presentation issues
- Proofs exist only as occasional medals and presentation sets, not as general-circulation Krona coins.
- Those proof medals underwent extensive planchet and die polishing—traits absent from regular 2 Krona issues.

Diagnostic Features of Aftermarket Polishing
- Uniform striations across both fields and devices, regardless of relief geometry.
- Occasional polishing halos or bright "hot spots" around high points.
- Striation depths often exceed 10 µm when measured by profilometry, versus the sub-5 µm lines of factory-buffed planchets.
Under 10×-20× magnification, look for slight scalloping at the start/end of each line—this indicates a cloth-wheel or handheld buffing pad rather than a factory tumbler.

Next Steps for Confirmation
- Measure the coin's weight and diameter; compare to standard 28 g / 38 mm specifications for 2 Krona (±0.1 g / ±0.1 mm).
- Inspect the mintmark (Uppsala). Verify die markers and portrait details against a reference die-study to rule out later restrikes or altered pieces.
- If you have access to a digital microscope or optical profilometer, record a depth profile of the striations for quantitative confirmation.

Additional Considerations
- Genuine surface patina often accumulates in micro-crevices of polishing lines; a completely sterile field suggests chemical cleaning.
- Historical mints sometimes used very fine pumice tumbling on planchets—these leave rounded, shallow abrasions, not the straight lines of wheel-buffing.
- If preservation of originality is key, avoid further metal-polishing; consider a gentle conservation rinse (deionized water + neutral soap) and storage in inert holders.
- Optical profilometry can quantify striation depth—factory polish lines typically fall under 5 µm in depth, whereas aftermarket buffing often exceeds 10 µm.

Wow colonialjohn now thats a Great answer Great information tx for the effort. I Will check my coins I have 4-6 with similar prooflike fields but without cleaning lines. I Will compare I have some ee

Regular cronas not commems displaying die polish lines.

What stod out with this one was the sharp details as most polished coins lose the cartwheel and feels watered out and that the lines are only visible from a certain angle

1 krona 45