The Death Rattle

Linus' grandparents gave Linus a very nice silver rattle for a christening gift. Unfortunately this is what was written inside:

Baby Safety

The Silversmiths at Empire handcrafted this product to be treasured as a lifetime heirloom. These beautiful keepsakes were never intended to be played with and should never be left with a baby without parental supervision.

Hence we call it the death rattle.

Linus seems to like it nonetheless.

Smiling

Laughing

Sneaky but cute.

Of course he loves putting it in his mouth. It's sterling silver, do I have anything to worry about? Is it bad for him? Or is the warning just legalese to get the manufacturer out of any responsibility for the product?