is this movement made in Japan?

I don't believe it's even a true seiko movement, seiko's are stamp either Japan or Malaysia depending on coutry of origin. This looks to be a chinese knockoff.

Will this mechanism fit in a 38mm Casio case with slight modification?

So long as the case will accept the width of the movement and its height it should work. But, be sure that the case tube will allow the stem to enter the movement evenly from left to right and top to bottom...

Does this movement tale three hands? And will it fit a 41 mm case

It has three hands: hour, minute, and second. It's a direct replacement for the earlier 7S26 and 7S36 movements, so if your Seiko case, regardless of the size, had one of those originally, it will drop right in. Be aware that you may have to swap in the black movement spacer from your old movement, as the gray spacer is a bit thinner.

Genuine Compatible With Seiko Sii Nh35 Nh35a Automatic Watch Movement

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127829CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Upgrade your watch game with Seiko’s heart of precision!

COMPLETE UPGRADE KIT - Includes original winding stems for effortless installation and reliable performance, elevating your watch’s value instantly.
PERFECT FIT GUARANTEE - Exact 26mm diameter and 5.32mm height ensure seamless compatibility—measure twice, upgrade once.
LONG LASTING POWER RESERVE - Keep your watch ticking confidently for up to 41 hours without winding—perfect for busy professionals on the go.
TRUSTED SEIKO CRAFTSMANSHIP - Backed by Seiko’s renowned quality, this movement transforms your timepiece into a statement of precision and style.
PRECISION ENGINEERED MOVEMENT - Experience flawless timekeeping with genuine Seiko NH35 automatic movement featuring 24 jewels for ultra-smooth operation.

The Ewatchparts Genuine Compatible Seiko NH35/NH35A Automatic Watch Movement is a high-quality, 24-jewel self-winding mechanism with a 41-hour power reserve and precise 26mm diameter sizing. Designed for seamless replacement or upgrade, it includes winding stems and features a date display at 3 o’clock, delivering reliable performance and authentic Seiko craftsmanship for watch enthusiasts and professionals alike.

Specifications

ASIN	B07D78T67Z
Additional Features	Automatic Movement, 24 Jewels, 41-Hour Power Reserve
Age Range Description	Adult
Band Color	Silver
Band Material Type	Sterling Silver
Band Width	26
Bands	1
Best Sellers Rank	#576,446 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1,664 in Women's Wrist Watches #2,723 in Men's Wrist Watches
Brand Name	Ewatchparts
Case Diameter	26 Millimeters
Case Material Type	Stainless Steel
Case Thickness	13.4 Millimeters
Clasp Type	Tang Buckle
Clasp type	Tang Buckle
Closure Type	Buckle
Crystal	Crystal
Customer Reviews	4.4 out of 5 stars 113 Reviews
Dial Color	White
Display	Analog
Embellishment Feature	Crystal
Face Style	Skeleton
Included Components	winding stems
Item Weight	0.13 Pounds
Item width	2 inches
Manufacturer	Ewatchparts
Manufacturer Part Number	WP-72110
Model Name	Seiko (SII) NH35/NH35A
Model Number	204eed1d-3e0a-4abe-b7e8-9ed7803ba7ac
Power Source	Automatic
Shape	Round
Sport Type	Walking
Strap Type	Bracelet
Style Name	Automatic Watch
Unit Count	1 Count
Watch Movement Type	Automatic
Water Resistance Level	Not Water Resistant

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