I found this glass with the metal. It reads "Boyd's Genuine Porcelain Lined" and all the N's are backwards. Found one on ebay for $100. Is this something unique?
My guess it would be a way to Date it.
The N was probably only reversed for a Short Production time.
However .. Your Probably going to need to Contact someone here Boyd's Genuine Porcelain-Lined Cap - Milkglass Jar Liners or do allot of Reading. I haven't seen the Info but do know
they are not Unique.
every so often someone asks