Just remember that in Germany, custodianship of securities is customary, rather than delivering the actual certificates to the holders. Banks charge a fee for this "service". However...

I was thinking German Bunds,

The government offers custodianship free of charge for its papers (something the banks won't mention) if you decide to go that root.

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The fact is that what we're experiencing right now is a top-down disaster. -Paul Krugman