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Mass-produced#1 in family

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Mid-tier supplier movement · caliber Junghans Cal. J800.1: ETA 2824-2 base, Junghans-finished, 28,800bph, 38h PR, 25j; used in Max Bill Auto and Meister Driver; clean German Bauhaus aesthetic · 38h power reserve

Also uses Junghans Cal. J800.1

Junghans Max Bill Automatic Ref. 027/3501.04, silver dial, steel case
Junghans
Max Bill
Junghans Meister Driver Automatic Ref. 027/3684.00, cream dial, steel case
Junghans
Meister
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
39.3 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

The arched case profile is the primary authentication check; fakes cannot replicate the exact depth and curve.

Known issues in the market
  • Lacquered dial is thin and delicate; cracks indicate moisture damage.
  • Case profile depth is difficult to replicate; incorrect profile is a strong fake indicator.
AreaWhat to checkWhat is correctRed flag
caseArched case profileSpecific cushion-to-round transitional profile with correct depth and curve for the Baumuster A designFlat or incorrect case depth; curve does not match documented profile
dialLacquer conditionSmooth lacquer surface with no cracks or chipsVisible lacquer cracks or chips; indicates moisture exposure
casebackCal. J800.1 designationJ800.1 engraved; ETA 2824-2 base with Junghans finishingGeneric caliber designation without Junghans identification
Common legitimate replacements
  • Crystal; arched crystal must match case profile.
  • Crown; original profile required.
Expert resources: Junghans Form A press materials. Junghans historical Baumuster A design documentation.

Authentication guide

Last reviewed June 2026

The Form A is Junghans' even-simpler alternative to the Max Bill. Where the Max Bill has the designer association and the "max bill" text, the Form A is purely monochromatic with minimal markings. The J800.1 automatic caliber is the same as the Max Bill.

Known reproduction risks

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LOW

The Form A has negligible replica risk. It is less well-known than the Max Bill and not a target.

  • Applied designer-name text that should not be present
  • Marker style inconsistent with the monochromatic Form vocabulary

Dial variants by era

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EraDescriptionIdentifiers
2018 to presentSilver, white, or black dial. "JUNGHANS" at 12 only, with no secondary designer credit. Date window at 3. Minimalist applied or printed markers.
  • No "max bill" or designer text anywhere on the dial
  • Monochromatic design: dial, markers, and hands in the same color family
  • "FORM A" does not appear on the dial; identification is through the reference number only
  • Date at 3 is standard on the Form A

Service part flags

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Dial

Original: Printed dial with no applied markers on some variants. The Form A is even more restrained than the Max Bill.

Replacement tells
  • Any appearance of lume on hands or markers is not original
  • "max bill" text appearing on what is sold as a Form A suggests a misrepresented model

Case back markings

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2018 to present
  • "JUNGHANS" and star logo
  • "CAL. J800.1"
  • Reference 027/4730.00
  • "SCHRAMBERG/GERMANY"

Movement tells

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  • The J800.1 is the same ETA 2824-2 base as the Max Bill Auto. All movement inspection points are identical.
  • The Form A case is 39.3mm and 9.7mm thin. A noticeably thicker case suggests an incorrect movement.
Sources: Junghans Form A official page.

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