Rare Johnnie Walker Black Label circa 1930-1935

Hi,
I have a few bottles of Johnny Walker Black Label possibly produced in 1930-1935 or maybe during the Prohibition era in the US (1920-1933)
The bottle in good condition, all original labels in place.
Here is a pictures:

Hosted on Fotki

Hosted on Fotki

Hosted on Fotki

Hosted on Fotki

I'm just wondering how much it worth. I have a few of the same brand, but it contains less liquid, although none of the bottle were opened.

Thanks in advance.
Dimitri.