What's the deal with 'new antiques'?

To me it means new to the store. I don’t really see another way to parse it.

I agree. They update their inventory weekly!!!

Time moves inexorably forward, so everything that exists, unless it is destroyed, will inevitably become an “antique”, someday.

Try definition 4 versus definition 1 in the oxford dictionary.

1 – not previously existing
4— at the present time or moment.

Is there “5 – not previously at this store”?