Hi, Nate Taylor here. Please reach out to me at nate@sscycleworks.com for inquiries on parts availabilities and shipping estimates.
Vintage Components - Nervar bottom brackets and bottom bracket parts
Nervar bottom brackets on this page: Nervar Star 68mm x 115mm French-threaded BB
Nervar is one of the forgotten brands of French component manufaturing, and this is unjust. Nervar parts were well-made and used on a wide range of French and Italian bikes.
Because Nervar used standard ISO spindle taper and crank-arms puller threads, unlike many other French parts, Nervar component are easy to service.
Spindle notes:
For those buying our vintage Nervar spindles, they have ISO square spindle taper. These are compatible with Campagnolo, older Stronglight, and T.A.
If you have a JIS crankset (Ritchey, S.R. most Shimano, Specialized and Sugino) the crankarms will sit about 4.5 mm closer to the frame when using an ISO spindle than if a JIS spindle were used.
Nervar Star 68mm x 115mm French threaded (35mm x 1mm) bottom bracket. Used, $35.00
Note: There is a pit in both the spindle & the fixed cup.

Here's the bottom bracket.

The cups and bearings turned over

Here's a close-up of the spindle, showing its pit.

Here's the pit in the bearing surface of the fixed cup.

The bearing surface of the adjustable cup.
Here's an 1899 Phebus bicycle poster by the great art nouveau artist PAL (Jean de Paleologue):

