Can anyone tell me what this light was used for?

[kmuffin88]

What was this lighted pole lamp used for?

Horse track?

Vintage light up fixture

It has 4's on all four sides.

[maxine*j]

Just what you'd think:  It can be turned on or off to indicate to customers / patrons that the Number 4 aisle, or cash register, or service window is open or closed. 

[kmuffin88]

Thank you for your fast response.

[maxine*j]

Based on these, you could call it a "checkout light" or a "lane light," although there are probably other names you could use, as well:

https://dandpcustomlights.com/checkout-lights/

http://www.panoston.com/store/supermarket-checkout-lane-parts/lane-lights-and-power-poles

[kmuffin88]

Wow! Your very helpful and informative. Thank you very much. 

[maxine*j]

Happy to help.   I see you put "horse track" as one of your tags.  Certainly this could have been used to let people know that Window 4 was open to take their bets, if you have some reason to associate this with a racetrack.

[kmuffin88]

I really appreciate it....