[78-L] Glass Compound 78s

[David Lennick]

Very simple..assuming that it's sturdy enough for you to handle without it 
breaking (and those things are VERY thin), hold it up to the light. If you see 
translucent bluish, yep..it's glass based. As for the flaking, that's not 
reversible.

If you find this somewhat risky, you can tape the edge lightly with your ring 
finger. The sound will be different from tapping an aluminum disc.

Not all manufacturers identified glass lacquers, except on the sleeve, which 
was pretty dumb. Amazing that 65 years ago, these things were able to be 
shipped..carefully, yes, but they frequently made it intact. They must have 
been a bit more flexible when they were new.

dl

78records at cdbpdx.com wrote:
> Greetings.  I am wondering how to easily identify glass compound 78s.  I was playing a record from 1942 and I noticed the sunlight was sparkling off the record in a rainbow of color, as if the light was being reflected through a prism.  I examined the record closely and discovered I could see brightly lit images through it.  It has an unfortunate crack and the edges of the crack seem to be flaking off like glass.  
> 
> Could this be a glass compound record?  Are there any sure-fire ways to identify glass compound records besides cracking them and looking to see if the edges are flaking off?  
> 
> Thanks!  CDB
> ______________________________________
>