Need help with jar lid placement..

[nammlif]

Picked up some jar lids this last week...and this one has me stumped...is this an insert for a common zinc lid...???... or for a zinc band..??..or some other style of closure..??..If anyone has a pic or information on this lid...Please share...Thanks

 

[MNJars]

I'm pretty sure that goes to the White Crown Mason jar. It would've had a band similar to modern canning jars and your insert would have been the lid. The White Crown jars are usually found now with regular zinc lids, but they originally came with that milk glass insert.

 

[nammlif]

Thanks MNJars...I finally found it in RB# 10...I think its #2961...I'm thinking it was used with a zinc band...