
There are silver lab breeders in the UK as well.
The breeding bitches look like a lab/weim cross, but the breeders say they are pure bred.
I think if you cross a chocolate lab to a weim you end up with whelps that are a lighter shade of brown, or in other words a dog that can pass as a chocolate lab even if on the light side. It could be seen as a silver lab.
When their eyes open they could be blue, just like a weim, but change to amber after a few weeks.
I suppose if continue to breed with the lab/weim cross on both sides you would end up with a pure bred silver lab.
Joe public is always sucked in with rarity in breeds, they never really find out the real truth what lies behind the colour, i dont really think they care.
As for price, £1k for a silver lab, £300 for a yellow dog on the breeders website.
It disgusts me that these people are able to get away with it.
The OP may have a weim cross, it would explain the blue eyes, undocked weims can carry their tails over their backs.