Help identify this rare silver bar of two 8c space stamps

[byeb1264]

I have been trying to identify this bar for several year but have been unable to.  Anyone have any info or know someone that would is greatly appreciated.

 

[CollectForFun]

Hi there,

I'm not sure what exactly you would like to know so in general, this item is a so-called First Day Cover to commemorate issuing of a new stamp. Fleetwood was the company producing it, it has since been acquired by another company named Mystic Stamp.

There can be different varieties of these covers, usually without any coin, medal or bar inserted, but in your case this one apparently includes a silver bar depicting the stamp itself. As I said, not sure what else there's to say about this, should you have any further questions feel free to ask 

[byeb1264]

Thanks for the info.  Outside of that, any idea of how many of the silver bars were made and if it has any value or not?