Hello Hihosilver,
Khomas Highland Safaris of Namibia, welcomes you to the greatest forum on earth.
Yours truly is not an expert at anything really.
However, beginning in my early teens, (I’m now 70), I have been totally possessed of a burning interest in firearms, especially vintage hunting rifles and cartridges.
(Vintage fly fishing tackle as well but, that is for another thread).
I agree with others here that, yours is no Rigby.
What little I can see of it, indeed indicates that it is a vintage German guild rifle.
There is nothing wrong with it being so.
Well, except that, the person advertising it as a Rigby is either a crook or perhaps, was fooled by whomever they bought it from.
Whatever the case may be, do consider taking your described rifle to Africa one of these days soon.
It is chambered in a classic world wide hunting cartridge.
It would be very cool to bag such critters with it as warthog, springbok, impala, kudu, black wildebeest, red hartebeest and a comprehensive list of others as well.
Have a peek at the Khomas Highland Safaris web site when you get a minute.
Even if you don’t book with Khomas, do book an Africa hunt with someone.
Practice mightily from standing over shooting sticks, with 160 grain or heavier bullets and then take that 7x57 to Africa.
Best Regards,
Velo Dog.