If you provide the lot number stamp, I can probably tell you the exact day and year it was loaded. W-W headstamps and child warning would make it no older than the early 1960s. Box condition is not that great, also not old enough to have collectible status even if the condition were better. In most common calibers, the more valuable ammunition boxes will be full, date from before WWII, and be in high condition. Don't feel guilty about shooting it up if you wish.