You would have to inspect the block and see if there is any distortion or not.
If not distorted the block is fine. But if the schackle or any other part is distorted then replace that block.
In fact you should carry spare blocks on board for ready replacements as required by the weather.
I checked it out the last time I went up the mast, no issue. I have a half dozen of these old blocks aboard. Matter of fact, we broke one on the Leeward sheet during the above sail and replaced it while underway, without losing ground.