Brass Lock?

[papamad]

found this at a 1920's home site, it is brass and at first thought the key was missing but it is a slot instead of keyhole. it appears to be some type of lock, any Ideas?

 

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[Tony in SC]

Looks kinda like a latching screw head ?

 

[Bruce R]

Mailbox lock would be my guess.

 

[4x4x4]

2 or more screw holes on back , possibly a panel latch to be worked with a coin....the bottom of the "key slot" appears dished.

 

[Bigcypresshunter]

is it possible to see a pic of the backside?

 

[DCMatt]

Lawn sprinkler part.

 

[papamad]

here is the back, sorry it took so long to get back to this.

 

[Bigcypresshunter]

sprinkler

 

[papamad]

I do not think it is for a sprinkler, it is about 1/4 inch thick, and slot moves the locking bar.