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The most delicate part of a 400 day clock is the thin wire called the “suspension spring” that holds the pendulum and controls its rotation. On many 400 day clocks, the pendulum can be locked in place for shipping and there is a metal or plastic guard to protect the suspension spring. On earlier clocks, the pendulum needed to be removed for shipping.

Kundo 400 day clocks from the early 1950s have a sliding piece on the guard that secures the bottom of the suspension spring during shipping. The photos below show the guard locked and unlocked, and also show an incorrect guard (a later one) on a clock that needs the earlier guard with the slider.

Job 5207. Horolovar back plate no. 1375. Suspension unit 1, uses 0.0032 inch thick suspension spring.

Related posts:

1. Setting Suspension Fork Height on Schatz and Kundo Standard 400 Day Clocks
2. 400 Day Clock Suspension Spring Sizes
3. Some Schatz London Coach 400 Day Clocks Need A 0.0024 Inch Suspension Spring
4. Kundo and Welby Standard 400 day Clocks with Large Dial
5. Schatz 400 Day Clock and 1000 Day Clock Suspension Units
6. Kundo Nickel Plated 400 Day Clock, ca. 1950

This popular 400 day clock from the 1950s has an oval base and dome. It uses the Kundo miniature 400 day clock movement with a 0.0023 inch thick Horolovar suspension spring. It has a pendulum locking device at the bottom rear of the movement.

Here is a video:

Repair job 5144. I cleaned the movement and polished one rough pivot. The suspension spring was good.

Related posts:

1. DeBruce 400 Day Clock by Kundo, 1950s
2. Koma standard 400 day clock, painted with flowers, 1950s.
3. Kundo Miniature 400 Day Clock Similar to a Schatz London Coach
4. Kundo 400 Day Clock – Locking Suspension Guard
5. Kundo Nickel Plated 400 Day Clock, ca. 1950
6. Kundo Miniature 400 Day Clock

This beautiful clock was made about 1950 and has nickel-plated base, pillars, movement plates, pendulum, suspension guard, etc. These nickel-plated models are not nearly as common as the standard brass model.

Here is a video:

Here is a slide show:

Repair job 5123. I cleaned the movement, polished 5 pivots, smooth broached the pivots holes and installed a new suspension spring.

Horolovar back plate no. 1363. Uses .0032 inch thick Horolovar suspension spring.

Related posts:

1. Kern Miniature 400 Day Clock, Nickel Plated
2. Kundo 400 Day Clock – Locking Suspension Guard
3. 1949 – 1950 Schatz 400 Day Clock With No Name On Dial
4. Schatz Standard 400 Day Clock, ca. 1950 with Badly Broken Mainspring!
5. DeBruce 400 Day Clock by Kundo, 1950s
6. Schatz Standard 400 Day Clock with No Name on Dial, ca. 1950

This Kundo miniature 400 day clock from the 1950s has a case similar to the Schatz “London Coach”. it is 8 1/4 inches tall (including finial). The side panels and rear panel are glass with a molded pattern. The front panel is plain glass.

I cleaned the movement, straightened the hand shaft and replaced the mainspring (the old mainspring had been cleaned in the past without removing it from the barrel and it had corrosion marks). Also, the suspension unit was not quite long enough.

Below are some pictures, there are more on my Picasa web album.

Here is a video:

Job 5108. Horolovar back plate no. 1379A.

Related posts:

1. Schatz “London Coach” 400 Day (Anniversary) Clock
2. Schatz “London Coach” 400 day clock made in September 1955
3. Schatz “London Coach” 400 Day Clock, April 1960
4. Some Schatz London Coach 400 Day Clocks Need A 0.0024 Inch Suspension Spring
5. Kundo Miniature 400 Day Clock
6. Kundo Miniature 400 Day Clock (4810)

These 2 clocks have large dials with 3 5/8 inch time track (the standard dial has 3 1/4 inch time track). They have attractive skeleton hands. Kundo made both clocks. The left one says “Welby” on the dial and movement.

The left one has the type of pendulum used for many years (it has a slot in the top part of each pendulum arm). The right one has the later type of pendulum without slots in the arms (I wonder if it originally had the earlier type).

The left clock has the longer, earlier type of movement mounting nuts (visible beneath the platform). The right clock has the later type of short mounting nuts.

Kundo used 2 methods to mount the dial to the movement. Earlier dials have taper pins through posts. Later dials have rotating fasteners. The photos below show both types.

Here is a video of these clocks:

Repair jobs 5079 and 5100.

Related posts:

1. Setting Suspension Fork Height on Schatz and Kundo Standard 400 Day Clocks
2. Kundo Standard 400 Day Anniversary Clock
3. Schatz Standard 400 Day Clock with No Name on Dial, ca. 1950
4. Kundo 400 Day Clock – Locking Suspension Guard
5. Schatz standard 400 day clock, diamond dial, made in 1953
6. Schatz Standard 400 Day Clock with Silver Dial, Made Sept. 1954

This 1950s 400 day clock is labeled DeBruce on the dial and Royce Watch Co. on the back plate. It was made by Kundo and is the same as a Kundo standard 400 day clock except for the names. It has the Kundo logo on the back plate. Horolovar back plate no. 1499. It uses .0032 inch thick suspension spring.

Repair job 5009.

Related posts:

1. Kundo Oval 400 Day Clock, 1950s
2. Kundo “Louvre” Style 400 Day Clock
3. Koma standard 400 day clock, painted with flowers, 1950s.
4. Kundo 400 Day Clock – Locking Suspension Guard
5. Kundo Standard 400 Day Anniversary Clock
6. Kundo Miniature 400 Day Clock

I recently repaired this Kundo miniature 400 day clock with a pretty gold colored metal dial. The movement needed cleaning and a new suspension spring. The pivots and pivot holes were in good condition.

Here is a movie of the escapement in operation:

Here is a slide show showing the complete clock, and the gears in place before the back movement plate was put on:

Repair job 4810.

Related posts:

1. Kundo Miniature 400 Day Clock
2. Kundo Miniature 400 Day Clock Similar to a Schatz London Coach
3. Kundo Standard 400 Day Anniversary Clock
4. Heco Miniature 400 Day Clock (Made by Kern)
5. DeBruce 400 Day Clock by Kundo, 1950s
6. Kundo Nickel Plated 400 Day Clock, ca. 1950

I just repaired this Kundo standard 400 day clock. Below is a photo of the gears and anchor before the back plate was put on, photos of the complete clock, and videos of the escapement and the complete clock.

Job 4779

Back plate: 1004
Suspension unit: 3C
Suspension spring: 0.0032 inches

Related posts:

1. Schatz “London Coach” 400 Day (Anniversary) Clock
2. Setting Suspension Fork Height on Schatz and Kundo Standard 400 Day Clocks
3. Kundo Miniature 400 Day Clock
4. DeBruce 400 Day Clock by Kundo, 1950s
5. Kundo “Louvre” Style 400 Day Clock
6. Kundo 400 Day Clock – Locking Suspension Guard