Eterna Matic centenaire "61"

gatorcpa

The crown should move in both directions. Moving the crown away from you is necessary to wind the watch.

It is common for the very thin Eterna movements to have issues with the manual winding wheels that make them difficult to wind. A watchmaker should be able to address this when serviced.

The good news is that the automatic winding feature on these movements is generally very good and a couple of swings with your wrist should be enough to get the watch running if it is in otherwise good condition.

Hope this helps,
gatorcpa

Canuck

Turning the crown toward you does absolutely nothing. These hidden crowns can be a bear when trying to wind the watch manually. Especially if the knurling on the crown is worn out.

Vitezi

Try stretching a fat rubber band around your finger when winding. The rubber gives you extra grip on the crown.

JwRosenthal

I have a Benrus Sea Lord that is almost identical (with an Eta inside), and as @Canuck mentioned, the chapter ring is part of the crystal assembly. Luckily I was able to reuse the chapter ring, but I also had a Mido with a similar design and that one could not be reused and I had to source a NOS factory crystal which came with the radium lumed pipped ring.

I’ve had a couple watches with these tucked crown watches. I have short fingernails and princess fingers, so find them difficult to wind & set and therefore wear then infrequently. But they are very elegant and incredibly clean looking.