What kind of clip is this?

[hcliffe]

And any idea on value?

[hcliffe]

markings

[r_hufschmied]

That's a MG13 magazine, go here for pricing:

http://www.ima-usa.com/index.php/cPath/14_69

Rik

[hcliffe]

Great info Rik, thanks!

[AndyB]

Berliner Suhler Waffenfabrik, proof WaA4, 1938, very nice.

[Matt Weber]

That price is probably a bit high.
I had two of these mags, one K date, and one G date, both minty, and listed them here on the estand about 2 months ago for $30, and they didn't sell!

Ended up selling them on gunbroker for $25 for both. Not a high demand for these.

Matt