Venus 175? Landeron? Marriage? Chronograph Suisse with "Breitling" branding

Hey all,

I recently picked up this vintage chronograph and could use some help decoding what I’m looking at. The movement is signed “BREITLING WATCH CCR SWISS” on the chronograph bridge, and while it looks quite convincing at first glance, I'm fairly certain that this is NOT a factory Breitling.

Movement:
~Appears~ to be a Venus 175 (column wheel clearly visible at ~11 o’clock)
Y-bridge with two capped jewels, correct coupling yoke, star-shaped column wheel
Could also be a Landeron 48 as when I look at blueprints it looks almost identical

Markings:
Bridge is engraved “BREITLING WATCH CORP SWISS”
“SWISS” stamped beneath balance, no obvious caliber number visible yet (haven’t removed dial)
Movement finish looks legit: brushed levers, decent machining—not a budget clone

Case:
Two-piece snapback with METAL stamped inside the case wall
Back of the case is thin stamped gold with a hallmark that reads 18K 0.750 in a lozenge + 3 other small stamps
Number 577 is lightly engraved at 6 o’clock inner bezel

Dial:
Classic bi-compax layout with printed “Breitling” script
Roman numerals and syringe hands—suggests a “Chronographe Suisse” aesthetic
Probably a redial (or at least re-touched), but clean and tasteful

1. Is this definitely a Venus 175?, or could it be another column wheel caliber from the same family (152? 178?)? Or definitely Landeron 48
2. Did Breitling ever deliver movements signed “Breitling Watch CCR” to third parties — or is this bridge likely re-engraved?
3. Is this a classic “marriage”? Genuine movement, generic Chronographe Suisse case, and later branding?
5. Ballpark value if this is a legit Swiss chronograph but not a real Breitling?

Thanks in advance!

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Apologies images uploaded twice and can't edit.

fake

Isn't this the watch

Breitling


EDIT: Now removed from C24

Well now, the Landeron 48 family are cam switched, said to be the first such, not column-wheel. Landeron 48

To call it "textbook" and "honest" are terminological inexactitudes, although at $2k perhaps textbook something, fishing for suckers with mouldy bait perhaps.