Europe's blue-chip shares take biggest one-day tumble since October
* Pan-European FTSEurofirst 300 index falls 1.9 percent
* Athens ATG index down 5.6 percent on political uncertainty
* Euro STOXX 50 down 3.1 pct, biggest one-day drop since Oct
* Multi-year lows for oil and copper hurt commodities stocks
By Atul Prakash
LONDON, Jan 5 (Reuters) - European equities slipped to a two-week low in choppy trading on Monday, with concerns over Greece's future in the euro zone and a sharp drop in prices of crude oil and copper hurting financial and commodities stocks the most.
The euro zone's blue-chip Euro STOXX 50 fell 3.1 percent, the biggest one-day percentage drop since October, while the pan-European FTSEurofirst 300 index fell 1.9 percent to 1,336.94 points by 1535 GMT. Benchmark indexes in London, Frankfurt and Paris were down 1.5 to 2.6 percent.
Energy and mining stocks were the worst hit. The European oil and gas and basic resources indexes fell 3.8 percent and 3.1 percent respectively after a supply glut sent oil prices to a 5-1/2-year low and copper hit a 4-1/2-year trough due to a stronger dollar.
Political uncertainty in Greece rattled markets before elections later this month. The Athens ATG index fell 5.6 percent, with lenders National Bank, Bank of Piraeus and Alpha Bank down 5.2 to 7.4 percent. Continuación...