I just bought a movement a month ago which the seller sold the case before. The idea of asking where he sold the case crossed my mind, but thought it was maybe already too late.
The only positive note is that I can get my hand on some rare high grade chronometers I could maybe not afford in their original state. Plus I prefer steel/silver colours for cases. But now I have to find cases... Do some people here also buy orphan movements when they feel it's something worth preserving ? Do you succeed to find cases ? I wonder if some having unusual sizes should get a custom case even.
I have around a dozen Landeron movement and perhaps 3 or 4 cases. One would think that given the numbers of these that were produced cases would be more plentiful.
I tried acquiring cases over the last year. The first one of all things fit a Val 23 movement. Another fit a Venus 170. Some fit the pin lever chronos which are more of a hacking watch as the balance is stopped. I bought an assortment of Cases dials and 'Becels.' The latter seems to be bronze movement shipping rings. There were no bezels in the lot. Only one case fit a movement. Still If I had not won the lot I would have regretted it.
Some of the cases I do have do not have backs or bezels. Others have broken or missing lugs. I started to look into simple nickel plating as more often or not the case is at end of life. Case work, like hairspring work requires a firm understanding of metallurgy. I am not sure which is more difficult. Forges and smelters are not something the neighbors like near their back yards.
Much of the different caliber numbering in the Landeron series is the size (usually in lignes) of the watch. They all use the same baseplate, which gets shaved down in different ways. There are also subtle differences in the upper bridges, even with watches of the same caliber. Minute jumpers are the bane of chronograph repair.
I bought many watches 23 or more years ago. For the reason that they were cheap. I actually managed to sell a few. I wanted a 'Delbana' dial for one that did have a case. Wound up getting an entire new movement, There was another auction which had one part I wanted, but had three plates. So once again I acquired a dozen movements. Which is another issue when buying watches for parts.
High grade chronos can easily turn into a money pit/ time sink. Parts for these are expensive, even when one can find them. Often they are mislabeled. I bought a Val-72 4th wheel. When I put it in the watch it did not have two long pivots. Even though the NOS packaging was labeled Val-72. By the time I found this, it was too late to really bother about it. A pillar wheel was missing a pillar. It can be weeks, months, years, or decades before I can find the time to use a part. eBay really is the last resort for such material. Much of it has been well picked over.
There is also more competition for empty cases when they do show. Few sellers bother to measure the pusher spacing. Valjoux movements tend to have asymmetric pushers. Landeron 48/51 practically have the pushers in the lugs. As noted most empty cases seem to fit Venus or Baumgartner/Rhonda pin lever type movements.
Currently I am waiting for a non chrono Enicar case to come from Canada. I have a decent dial, no movement or hands. I do have an Enicar labeled case, but the dial is to large. The hard part on this will be to find a movement that matches the dial feet. I did find a word that seems to fit dial feet what do not match. Lacunae. Is a word that means gaps in things like bones or knowledge. This word fits the dial feet madness perfectly. It also sums up my collection. There are too many gaps even with the narrow limiting to a few watch types and brands.
I also have a decent Lemania 105. cal1280 without a case. Hindsite says I should have paid more attention to cases 30 years ago. The cheap caseless movements were too tempting. One does not always notice how much one is acquiring this way.
Now days I am only looking at complete watches or those elusive empty cases. Of course one might make exceptions, mostly if there is a really decent dial. Dials though are a different story, and I already have plenty of posts relating to that subject ...