Crown and stem

[Dch48]

Hi, I'm new here and I have a question. I am in need of a replacement crown and stem for a Timex 400 with the Japanese Seiko movement. Can anyone help or point me in the right direction?

[Chopin]

Well we're going to need the model of the movement as that is the one that tells us what stem and crown are needed.

Might not be a problem with sourcing the stem but could be difficult to get an identical original crown though...

[Dch48]

The crown and stem are one piece and there was only one Seiko movement used in the Timex 400. It doesn't  have a model number anywhere that I can find but is very much like the one used in the first Seiko Marvel.

[Chopin]

Ah I get it. It's that kind of crown and stem.

I found this online " The 1960 Timex '400' 17 Jewel was made in West Germany. The '400' series movements were produced by Laco in West Germany (one year only) and then for about 3 more years by Hatori (Seiko) in Japan. The 400 series was made during an era when Timex was expanding its worldwide market."

You should be able to see what movement type it is by checking around the balance or under it.

I guess your best bet might be to simply buy one of those cheap watches off eBay and replace the crown. Provided you find one that is the identical model to yours.

Edited July 23, 2017 by Chopin

[rogart63]

If you can figure out which Seiko movement it is?  Could be a 66A  as i think it has a one piece stem and crown. 

A little googling  The Timex used a Seiko marvel 17 jewels movement. That was a 5470 and was available in 17 ,19 and 21 jewels. There was a later model with 23 jewels also. 

That stem would probably be the easiest to find? 

Edited July 23, 2017 by rogart63

[rogart63]

I mean 5740 not 5470. 

[Dch48]

The Marvel started out with another 17j movement before the 5740 and from pictures it appears that Timex used the earlier one that I can't find a model number for anywhere. From what I have seen the Timex movement and the earlier Seikosha movement have a button that presses down to remove and insert the stem whereas the Seiko 5740 has a screw. The mounting locations also seem to be different on the 5740.

Anyway, I won an eBay auction for a beat up 400 that the guy says runs but he couldn't tell me if it was the German or Japanese movement. Hopefully, it's the Japanese and I can switch the stems out. If it's the German one then, well, I'll have one of each.

[Dch48]

I only paid $10 for the second 400.

[Dch48]

Okay more research suggests that the movement used in the 400 is the same as the one used in the Seiko Laurel in the last two years of the 1950's. I'm also seeing that the 5740 Seiko was a high beat movement and the one in the Timex 400 is the standard 18,000.

[Dch48]

I found that Timex called the movement the 70-5 or 70-6

[Dch48]

It's definitely the 70-6 because it has the push button stem release and the chamfered edge.

[rogart63]

http://www.ebay.com/itm/100s-NOS-VINTAGE-TIMEX-REPLACEMENT-WATCH-HANDS-CROWNS-STEMS-UNUSED-PACKS-/391692953003?hash=item5b32b825ab:g:YK0AAOSw~gRVxO~g

Could this be anything? 

Doesn't look like seiko did mark there early movements . As it's so hard to find anything about them. 

Have you checked cousinsuk ? If they have any parts for Timex?