The Pulsation Bezel is seen in two executions. Here is a 2998, with an early (vintage) example. The vintage bezel is identified by the silver line separating the inner edge from the numbers.
This particular example is pleasing but with issues.
When buying we must always check the dial, and the dial printing. This is a classic example where the printing, (near the 12 marker) has degraded. While the dial is a correct vintage dial, the condition is lower, and so therefore must be the value. By how much, well thats the game!
Here is the rest of the watch.
We also have to consider the For a long time these bezels were not especially valued, and people wanted the DO90. I have noticed an uptick in interest, and prices paid for the pulsation bezel in recent months.