Half-Life λ

If you’ve played the Half-Life games, you’re probably familiar with the circled lambda logo that can been seen throughout the game:

In the past week, I’ve randomly come across two real-life versions of the same thing:

I thought that it was pretty funny/strange that:

[]someone had actually made a copy of the logo
]I happened to notice both of them even though they were several miles apart and I wasn’t on the lookout for Half-Life logos