1932 Jump Hour Twins

Submitted by plainsmen on October 10, 2011 - 12:58am

Well gents here's a find I thought I'd share.  I may have overpaid.  I guess it depends on your perspective.

Two early 30's Bulova Jump Hour cases.  One natural gold plate the other white gold plate.  This find came with a running Bulova 13AT, 15 Jewel Jump Hour movement that actually fits in both cases!

The cases are a little dinged up, but it's to be expected from a 1932 watch that's been in circulation.  The movement runs, though it looks like I'm missing a seconds dial.  Upon speaking with International Dial, the owner explained to me the process on how to make a replacement, though I'll probably have Mike from Timemachines do it when he gets a chance.  International Dial then has the die set to paint the original matching numbers for the seconds.

All in all I think it's a pretty neat set to have and I think the vintage gold case Jump Hour is a first for our site.  Comments are very much welcome and encouraged on this set gents!

Wayne Hanley
Posted October 10, 2011 - 2:32am

Plains

Nice couple! I'm glad you showed the movement. Every time I attempted to open my Jump Hour I encountered a bit of resistance that made me cease & desist . The watch runs so good I just left it alone rather than risk damage or death from Tinkeritus. So now I know the model movement it is & what it looks like. Thanks.

mybulova_admin
Posted October 10, 2011 - 2:40am

Man they polished up really nice. What's the secret?

vintagebulova.com
Posted October 10, 2011 - 9:02am

The Jump Hour is one of my all time favorites and on my top 5 list of most collectable Bulovas.  This was a good score.  These guys tended to get banged up since they didn't have a crystal to take the hits, just the case.  They were produced with a satin finish on the front of the case probably for this reason.  I have seen them completely polished up as is your gold version.  They didn't come that way.   That being said I have seen them go for big money when all bright and shiny.   The Mens Jump hour was produced with 2 different case styles that I am aware of.  You have both of them.  They came with either a 13 series or a 10 series movement.  The case on the left is the one I have seen that housed the 13 series.  The one on the right usually had a 10 series.  Very interesting that yours takes the 13.  The numbers on the hours dial seem to be a bit off.  When your are having the seconds dial made you may want to check with Rob on this.  This is the first yellow gold Jump Hour I have seen.  I have a two tone example in my collection.  Here's a couple I've had come through.  The first is a 13 series that I restored.  The second is a 10 series before restoration.

 

Jay

vintagebulova.com 

Wayne Hanley
Posted October 10, 2011 - 4:17pm

It may be an optical/photo thing but the tonneau that you call the 13 series looks different from Plains tonneau. It appears to me that both of Plains cases have the same distance between the minutes window & the seconds window and therefore use the same movement.

Comparing Jay's top 13 series & bottom 10 series watches, the distance between the minutes window and the seconds windows appear different and therefore could not use the same movement. The 13 series seconds disk looks to be mounted on another shaft than the minutes disk. Just thinking of reason for 10 series movement & 13 series movement.

Can you see the diference?

vintagebulova.com
Posted October 10, 2011 - 5:47pm

Bulova used what they could get.  It's the same deal with the Lone Eagles that came with 10 or 13 series movements.  Whatever they could source at the time they would use. 

Jay

vintagebulova.com

Wayne Hanley
Posted October 10, 2011 - 6:50pm

Are both movements interchangeable or are there two different cases, one to fit each movement?

vintagebulova.com
Posted October 10, 2011 - 7:30pm

The cases are different.  The 10 series is round and the 13 is, well not round.  I'm real curious to see the inside of Jerins stepped case.  This is the first one I've seen that takes the 13 series.   Wondering if its factory or someone modified the case.  BTW, this is highly speculative as it's more than likely that it came that way.

Jay

vintagebulova.com

 

plainsmen
Posted October 10, 2011 - 7:32pm

In reply to by vintagebulova.com

Here you go... on the curious side.  The case has the 1924 patent rather than the later 1927.

OldTicker
Posted October 10, 2011 - 7:54pm

They turned out nice Jerin.

You can wear the gold one when you go out and shake a leg on Saturday night,  swap the movement to the Silver case and wear it to church Sunday morning...

plainsmen
Posted October 11, 2011 - 12:19am

In reply to by OldTicker

Yes... the white is definately my "go to meeting" watch.  Heh....

bourg01
Posted October 12, 2011 - 10:07am

Hey Jerin,

Both are very nice and you've done well to snag them for your collection. These are few and far between and I think your 13AT is showing a 1932 date stamp. Can you confirm this for me. Mine has the 10AT round movement with a 1932 stamp. Since there are no ads presently on the sight showing this watch in 1932 it will help establish 1932 as an earlier production year. The earliest ad we have is 1934. Here's my jumper.

Ha! I finally got this picture insertion thing figured out. Thx for the tips Wayne

bourg01
Posted October 12, 2011 - 11:09am

In reply to by vintagebulova.com

No, it's original. I think the reflection off the case has you thrown off a bit.

FifthAvenueRes…
Posted October 12, 2011 - 10:59am

still don't see the White Case ?

bourg01
Posted October 12, 2011 - 11:11am

In reply to by FifthAvenueRes…

Nope, I don't have the white case. Jerin's is pictured at the top of the thread.

plainsmen
Posted October 12, 2011 - 11:15am

I'm at work... relax folks I'll get it tonight!  hah..

Wayne Hanley
Posted October 13, 2011 - 7:16pm

I finally opened my Jump Hour & was able to remove the movement without getting terminal tinkeritus. I have not taken any pictures of mine yet, but I found a picture of a 13AT jump hour without the case & sure enough the hour disk is on a seperate shaft than the seconds disk (notice the hour disk is south of the center of the minutes disk). Note that this movement also fits the rectangular stepped case. So for sure there is a different case for the 10 series movement watches.

I would like to see a 10A? movement and case picture similar to these.

 

plainsmen
Posted October 13, 2011 - 8:21pm

Okay here's the inside of the white case

Wayne Hanley
Posted October 14, 2011 - 1:57am

First one I have seen without the seconds window. This has to be a 13AT movement case.

Wayne Hanley
Posted October 14, 2011 - 12:54pm

In reply to by vintagebulova.com

Jay

I forget where i copied that picture. It sure does have the look of a Bulova. I only have that one pic. If anyone has pictures of the 10 powered Jump Hour please post then here.

 

plainsmen
Posted October 14, 2011 - 10:11am

In reply to by Wayne Hanley

Isn't the 13AT an big rectangular block? Mine sure is.   Unlike your post here Wayne.. it's got a round movement.  That's probably your 10 movement.

Wayne Hanley
Posted October 14, 2011 - 12:49pm

In reply to by plainsmen

Thanks Plains

I meant to say 10. Frikken Alzhiemers again!