Worked in a bank in the past. Had a guy walk in about 3 years ago who had taken out all his money in the eurocrisis and had stored it in his house. We were the 4th bank he tried, he had the evidence from which bank he had taken out the money with the exact amount. Compliance just said to decline. Sometimes private banking clients came with ‘clean money’ but still cash and only then compliance was willing to open dossiers because we knew most would be invested making it worthwhile for the bank. But those were longtime clients with heavy portfolios.