Desiderando Giulia...Diamond

The beautiful Giulia is alone in the house: her husband out on business, she comfortably relaxed in lingerie ... all of a sudden she receives an unexpected visit: she is a strange fellow, a bit clumsy, who with polished language opens a briefcase full of banknotes for her ... destined for her! In exchange, he tells her, a small 'oral' homage from her would be enough and voilà, a done deal!
At first incredulous and indignant, Giulia then gives in to the agreement, which turns out to be fruitful for both ... to the point of repeating it the next day: same amount, same 'gift'!
But who is this gentleman who desires her so much and at such a high price? It will be the husband himself who will reveal the surprising truth to Giulia ...