Police say two Pablo Picasso etchings worth a combined $450,000 have been stolen from a gallery in Palm Beach.Authorities responded to an alarm at Gallery Biba at about 3:40 a.m. Thursday. Palm Beach police spokeswoman Janet Kinsella says a glass back door had been smashed and the two etchings were missing.She says the etchings were valued at $150,000 and $300,000. The gallery has identified the pieces as "The Frugal Meal" and "Jacqueline Lisant."The investigation is ongoing.