Short answer
The search string 'replica lange 3 101.03f' mixes two things. A. Lange & Söhne has no model named Lange 3. The 101 number belongs to the Lange 1, the first watch the company released after it restarted in Dresden in 1990. Reference 101.03 is a Lange 1 in yellow gold. Letter suffixes mark dial and case variants. I could not confirm a factory listing for the 'F' suffix, so treat that exact code with care.
What the original reference is
The Lange 1 launched in 1994. The layout has an off-center main dial at 9 o'clock, an outsize date at the top right, a power reserve indicator at 3 o'clock, and small seconds at 5 o'clock. The first generation used the L901.0 caliber: hand wound, twin mainspring barrels, 21,600 vph, 72-hour reserve.
- Case: 38.5 mm diameter, about 10 mm thick
- Metal for the 101.03 code: 18k yellow gold
- Dial: solid silver with applied markers
- Date: two-disc outsize date, jumping
- Crystal: sapphire, front and back
What replica versions share
Most copies of the Lange 1 use a 38 to 40 mm case with gold plating or a thin solid gold shell. Common movements are Chinese clones of the Seagull ST25 or modified automatic calibers under a decorative bridge plate. A few high-tier builders use hand-wound clones rated at 72 hours.
Known gaps:
- Outsize date: copies often use one disc or printed numerals. Font weight and the two-digit jump differ from the original.
- Thickness: copies run 10.5 to 12 mm because the movement sits taller.
- Finishing: the original carries a hand-engraved balance cock and Glashütte stripes. Copies use machine or laser work.
- Power reserve: on some copies the indicator is decorative and not linked to the mainspring.
Checks before you buy
- Ask for measured case diameter and thickness with a caliper photo.
- Ask for a video of the date change.
- Confirm the power reserve by running the watch for 72 hours.
- Ask which movement is inside and request a caseback photo.
Price and legal notes
Copy prices for this model range from about $200 to $900, based on movement and case material. Few listings name the movement. A replica is not a Lange 1, carries no factory warranty, and has no collector resale market. Importing counterfeit goods into the United States can lead to seizure and civil penalties under 19 U.S.C. 1526.