Unusual Carbide Acetylene Headlight From the Teens?

I found this headlight at an auction and couldn't let it get away. I think it is from the teens since it is a carbide acetylene light. What is the big question is the lens. I have never seen a lens that looks like that. Not sure if it is supposed to be a fog light lens or just decorative lens or what. Would appreciate any info you guys could give me on it. Thanks in advance.

 

btt

 

I'm not sure about the lens, but I think I may have the matching headlight. Any interest?

 

HI, I just now saw your reply. Thanks for the offer but I have several other lights like this already but not one with this lens. I'll p*** for now. Thanks.

 

after market lens from the period

 

Thanks for the info.