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1973 Bulova Diamond Excellency Q. 11 AN mov't manual wind. Love the UFO look of this one. Not sure the size of the diamond but looking around for an advertisement to see if it is.listed....strap is not original but the buckle is signed along with the crown. In excellent condition.

The overcoil can have a number of forms depending on where the stud is situated in relation to the spring. Here's a pic of the Phillips terminal curves. The pdf has all the curves in different scales, you can actually print it out and lay the spring over the one you determine you need to help in forming the coil. It's in 4 languages too! PhillipsTerminalCurves.pdf

My latest. Timex 2465. Replaced the crystal, caseback gasket and spring bars. All in less than $5US. Added a gray NATO strap I already had in stock.

I'm currently 3D printing a new basket and trays for my Pearl machine - I printed one last week in PETG material and it worked well at first. I had taken a calibration cube and soaked it in old cleaning fluid for 8 weeks and then measured it, and there was no discernable swelling or shrinkage and the cube seemed mechanically intact. All went well after the cleaning cycles and then onto the drying cycle..... that's when things went awry. The heat was more than I was expecting and the basket and individual trays warped and deformed, I later found out that PETG is rated to 65°C working temperature (PLA = 54°C) I am now trying to print from nylon (working temperature = +/- 100°C, depending on the specific blend) - but it is extremely difficult to print with, my third attempt is chugging away now while I am at work - hopefully I don't go home to a ball of wool like last time! Assuming the heating compartment can't go higher than 100°C.... but not second guessing myself...anyone have any ideas or measured it? I also have a question on the trays, maybe I'm not seeing the obvious, but how do you use the ones identified with the arrow? they are called Basket_for_large_mainplate_and_mainspring.stl Basket_for_small_mainplate_and_mainspring.stl I can see the place for the mainplate, but how are you supposed to place the mainspring, you can't uncoil the mainspring to fit around the outer circumference of the tray or else you would damage the inner tight coils. Is the idea that you supposed to lay it on top of the mainplate?

Yes, the general pat is this. On my diagram the points where the springs rises and levels are marked with red circles. This is only to show on all pictures (the ones that doesn't show this points as they are seen only from aside, not from above) where this points are. On You pictures, the pont where the spring rises is not marked. The point where it levels is marked with A. The point B is where the change in radius should start, but there is sharp bend there which should not be that sharp.

This is such an odd Bulova. Off of the top of my head the only other mechanical Bulova that I can think of that has the 'Bulova' logo as an hour marker is the Golden Clipper 'J' (there must be others), one of my favorite dials. And then it has a solitary diamond, which is not unusual with Bulova, but paired with the 'Bulova' hour marker, that only leaves two quarter hour markers, and I can't think of another Bulova that has only two hour markers like that. You do you Bulova, no conformity here!

I have some Gruen 510's in my donor pile if you need parts.

I've been intrigued by everyone's input here...so I decided to give this a shot. I bought the"typical" Pearl watch-machine basket and trays, for about $65. The trays are good,..the housing is a nightmare ! Thought it would take the mixer off my bench at anything above about 200rpm. The housing is cast of course,..and it's not "true" at all...so the harmonic vibration was insane. So,..I bit the bullet and bought the Elma housing and top. Not the baskets though, as the Pearl one's fit the Elma. Saved a bunch there. The basket and lid came to about $80 with shipping. The opening in the Elma top is 8mm, and the shaft that came with my stirrer is 6mm. I bought a piece of steel tube, 8mm O.D., and 6mm I.D. Cut off about an inch of the tube, and drove the rod into it. Gives a really snug fit.... Lightly champfered the leading edge of the 8mm section, then lightly tapped it into the top of the Elma lid. Spins like a dream now So... I have about $240 total into this including jars and steel mesh for the wave breakers I'm pretty happy Best to you all Randy

On the plus side it kept everything from going rusty

My newest 404 candidate, a late '60's / early '70's Waltham with a UTC 33 / Seiko 6601 17 jewel automatic movement. It needed a new crystal and I put on a strap from my Strap Graveyard. The timegrapher was a snow storm before servicing but it cleaned up nicely. I really like the funky font used for the hour markers.

My second iteration. Cleaning to be underneath the towel rails. That makes sense. Moved the fridge and the maching/printing table around to the right. Changed the lathe to be used over the end of the bench. Not much room in front of the 3D printer, but you don't have to stand there while it is doing its thing. I may swap the fridge and the machining/printing bench yet. Not sure. And the 'doing' area. The power that was brought in for tha spa was 30A I think, so there will be more power than I need. I will have to check how level the benches are as well as find a spot for the movement testing rig to go. The tiles do have a fall toward the drain so I will have to work something out to be able to level the rig easily no matter where I put it. I'm also going to cut some slots in the bottom for pendulum clearance and some squares in the top section to be able to better see the movement. I'm getting more excited now.

Looks like it is only dirt. If rust, then this means the strenght of the spring is reduced in places with rust, so the spring is damaged and useless. Only light surface rust, which is rather residual from other places activity of rust can be cleaned, and no chemicals that can etch the metals of the spring aloy should be used Be aware that this usually happens when the dial/hands have radium lume! One of the pivot looks little bent. Not that much to prevent the movement from working, but may be amplitude will be a little bit smaller when this pivot down, resing on the cap stone. Bent pivots always means the balance is out of poise, but it depends on the severity of the bent. Yes it can be straightened, but at this point I will advice to leave it as is and check how the movement performs.

Lots of rust on that hairspring Nev, would you even try to clean it up ?

Yes Breguet overcoil, and A is OK, the damage is from B to the end. It should look lile this. The studd is fixed by the screw head into the cut.

Can you turn the cock over,looks like the stud fits into that cut out

Newbie here too, but I’ve done a bit of reading around this subject. Looks like a Breguet overcoil. You’re right about A and B - A is just a minor tweak - but most damage is between B and the stud. Pivots can be unbent, but there’s a high risk of breaking it off. Take care, and probably see how it runs before trying. That’s really dirty. I’ve never found IPA to loosen Shellac. If you’re worried, put it in soapy water in the ultrasonic and then dip it in IPA as a quick rinse to displace the water and prevent rusting. As for the stud - does it wedge in the angle and the screw holds it there?

I certainly do Razz. Ive just started work on this AS554, interestingly enough it had a paper dial made from a postcard , look at the brand name on the dial, very curious.

Thank you for posting this! I just found my grandfather’s watch which looks exactly like the third one pictured in the original post… although it has a bracelet instead of a strap. Can someone tell me what C.P.C. stands for?

Just to wrap it up, here are some shots with that vintage Caravelle strap.

Oh wow, that is a stunning collection!

The 7620 with the black dial has been the only one I have seen besides mine. Could you please tell me a little bit more about the watch ? I looked up the serial number and it came back that it was made in 1945. But some things they had wrong about it like it said it was a 17 jewel and it's actually 23 jeweled. But if you could please help I'd be greatly appreciative.

Really nice watch collection, and the diversity of bands makes each complete. JC