Early model of the luxury item Lord Marvel (Cal.5740A), alongside Grand Seiko

Model Name: Seiko Lord Marvel Cal. 5740A

Features: A high-end mechanical movement with 23 jewels!
This was Seiko's top-tier model before the Grand Seiko was introduced.

History: Used around the time of the 1964 Tokyo Olympics.
The Cal. 5740A found in the Lord Marvel, a historic and luxurious wristwatch series from Seiko,
is marked SEIKO 23 JEWELS 5740A on the hand-wound movement, indicating its 23-jewel specification.

Cal. 5740A Movement Features and Historical Background: Introduced around 1964,
this caliber was developed based on Seiko's renowned Crown movement.
It is also known for being the first Seiko movement to have a serial number engraved directly onto the movement itself.

Features: A high-end, 23-jewel, hand-wound movement!
This is a mechanical marvel that embodies the pinnacle of contemporary technology.

Rarity: The Lord Marvel is a precursor model to Seiko's luxury lines,
leading the way for the later Grand Seiko.

Key Features and Historical Significance of Cal. 5740A: It is known for being
the first Seiko movement to feature an individual serial number engraved on it.

Performance: A low-beat movement operating at 18,000 vibrations per hour (5 beats per second).
Its simple construction ensures excellent robustness and ease of maintenance.

〇The 5740 series movements evolved as follows:

① 5740A: From 1964. Low-beat (5 beats per second).
② 5740B: From 1964. Low-beat, but often features the addition of a second hand regulation (hack) function.
③ 5740C: From 1967. Japan's first 10-beat (36,000 vibrations per hour)
high-beat model, used in the Lord Marvel 36000.

〇Condition

1. Used.
(It was stored in a repair safe for decades.
However, it started ticking energetically when taken to a watch shop!)
2. The mainspring is not broken.
3. Replacement of the crown is recommended.

〇Requests from the Seller:

〇Please only bid if you are a serious buyer!
(A previous transaction led to a lot of trouble!)

〇I am an amateur and will not be able to answer technical questions.
Please research them yourself. I apologize for the inconvenience.

〇Due to my work schedule (three-shift system), there may be some delay in answering questions and shipping.

Thank you for your understanding.