0👍
Boo. My sincerest apologies but it was just a simple typo of the url but to answer my question, these work as intended.
<v-img :src="`https://thisisanexternalsite.com/images/${item.img}`" contain></v-img>
and this one as well
<v-img :src="'https://thisisanexternalsite.com/images/' + item.img" contain></v-img>
I’ll try to be more careful next time. Cheers.
Source:stackexchange.com