German Raider Atlantis Model Ship Found at local estate sale. Would greatly appreciate further Information.

EdGrune

And to tweek the Captain's number just a bit, 1/16 scales to 1:192

And, to Bill's point, I was looking right at the 192 number when I typed 196 the second time [headsmack].

Should have disconnected from my search for what "N" scale was before typing.

There are a number of museum display models you can find online of this ship. Some might be at this scale. 

A photo or two would be helpful. If you should decide to sell it, it could be pretty valuable.

Bill

I make that mistake too, as 1/8" = 1'-0" is 1/96.

But hey, he's an architect like me.

Bill

The ModelerJoe kit list lists just two 'plastic' model kits of the DKM Atlantis; one referenced by the Captain by Aurora, and a 1:700 scale resin kit by HP models of Germany.  ModelerJoe lists the Aurora kit as 1:410 scale and a product of the late '50s.   Since you are talking about a 'heavy' model and which is twice as long as the Aurora, it is likely not a commercial plastic kit.   The reviews on ModelerJoe say that the kit, while excellent for its day, was a blank canvas for adding detail.

The model may be totally scratch built, possibly on a solid wooden core.  Magazines from the late-40s through the 50's, in the genre of Popular Mechanics, would carry detailed  plans for craftsmen to build model from.   Ship model craftsmen would commonly use the 1/16 scale for larger subjects.  And to tweek the Captain's number just a bit, 1/16 scales to 1:192  (16x12). 

The Pinterest link goes nowhere, so there's not much to go on.

Checkign Saclemates gives this:

https://www.scalemates.com/search.php?fkSECTION%5B%5D=All&q=Atlantis+raider*

Which really only shows the Aurora 1:456 kit.  Which would be about 13" long to scale.

Taking about 31" and 509 feet in length gives around 1/196, which is close to N scale, but I suspect it's 1/196 scale, or 1/16" = 1'-0" a common ship scale.