to be annoyed with DH

I used to have a bowl that was specifically designed for making steamed puddings. It also had a lid, so I didn't have to fiddle about trying to tie greaseproof paper over it with bits of string before it went in the steamer. Apart from being very practical, it had been my grandma's, so it also had sentimental value.

One day when I wanted to use it, all that I could find in the cupboard was the lid. A mystery - until some time later I found it in DH's workshop, full of turps and dirty old paint brushes. Completely and permanently ruined. Grrrr - am I being unreasonable or not in being angry with him?