This is a regular service of a Caravelle dress watch.
Caravelle had links with Bulova (Bulova’s less expensive line). The movement is the Bulova 11DP which is a rebranded Citizen 0241 movement.
This movement was available in two versions. One has 7 jewels and the other one has 17 jewels.
When you remove the case back, it’s a bit disappointing to see that it’s the version with 7 jewels but it works. Actually, it works great because, after the service, the amplitude is 270 (which is very good for a citizen), with a beat error of 0.3 m/s and a rate of +4 sec.
Bulova is an American brand that we don’t see too often in Europe. The brand is probably best known for the Accutron, the electronic tuning fork watch of the 50s. In the 1930s and 1940s however, Bulova was known for rectangular gold-filled watches. They continued to produce similar models until the 1960s. This is a “21st Century” art deco style watch with a 10K rolled gold plated case. Vintage Bulova watches have a date code that you can use to date a model. The date code is L7 which dates this Bulova art deco to 1957.
The movement is the in-house Bulova 11AC. The watch didn’t run and the crystal was in a bad shape.