What are decent timegraph stats for vintage Omegas?

I've been eyeing a 1964 Omega Constellation, and the seller got back to me with the following timegraph results:

Rate: +4s/d
Amplitude: 250 degrees
Beat error: 1.2ms

Are these decent stats? And how much consideration should be placed on timegraph stats for vintage watches?

Thanks!

that's still a lot of beat error for a 1964 constellation, its probably a 561 or 564 so should have a movable stud carrier, but like others have said if the lift angle is wrong the amplitude may be reading too high

This reading doesnt say a lot.

It depends on what position this reading was acquired from. A freshly serviced watch should have an amplitude from at least 270° (and not get too close to 360°) and 230° in the vertical positions.

One rate says nothing. More important is the delta or the difference between the positions. I would accept atound 20-30 seconds. The 560 series calibres can be made to chronometer specifications. So a good watchmaker can make this watch work like a chronometer i think.

Then again a good reading doesnt say that the watch doesnt need a service. It might be dry but still work fine.

The beat error should also be below 1.0ms. But it can easily be corrected to below that value.