Can anyone ID this item? Collar brass?

[Evolution]

I found this item at an old farmhouse site. It just has the number 5 on the front of it. Anyone know what it is? It's a little smaller than a dime. It looks a little small to be collar brass but that is the only thing I could think of. Any ideas?

 

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[VERMONTPACKRAT]

I have seen similar iron "numbers" in telephone poles. Some way to mark or number them ?? VPR

 

[Montana Jim]

It's not collar brass... way too small.

Might be a tree or pole tag...

 

[Evolution]

Thanks for the responses guys. I figured it was too small to be collar brass. For now, it's in the "junk" box.

 

[Bigcypresshunter]

Might be a pole nail or date nail from a utility pole. They are collectible. Check out this site. http://nailhunter.ehost.com/

 

[watercolor]

Could be a storm window marking number. These marking tacks were generally made in pairs. . . one would be tacked on to the storm window and the other matching number to the window's frame on the house. This would insure a proper fit when each window was put back on after summer.

 

[QUICKSILVER (appletree)]

I'd say a window number, in the old days they would put them on storm windows so they would go back to the right window. there would be a # tack for window sill, storm, and screen, they didn't always interchange.I know the ones I posted look a little different, they are reproductions, I have the real ones on my house, built in 1895.