The Object of Beauty (movie, 1991)

American couple Jake and Tina are living in an expensive London hotel above their means, incurring a sizeable debt. When they are asked to pay a lavish dinner bill and Jake's card is declined, he suggests they sell Tina's tiny, expensive Henry Moore sculpture to cover the debt. After they hatch a scheme to claim the sculpture was stolen in order to collect insurance on it, the sculpture mysteriously goes missing.