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Re: [ATM] Special Short Flint APO -- Some History

Richard wrote:

>Hi Richard,
>
>Wednesday, June 8, 2005, 7:41:12 AM, you wrote:
>
>RFLRS> Recently, a friend and I had acquired some quite ancient pieces of glass.
>RFLRS> Fortunately, the glass was marked with the values 517645 and 621362 (or
>RFLRS> sometimes 620362).  These were recognized as being the icodes for a
>RFLRS> borosilicate crown and a dense flint made by Bausch and Lomb.
>
>Could anybody regonise this glass code please? -  557582
>
>I have some blanks marked as such which were sold as possibly
>being BAK5.
>
>  
>
Could that be 557587 for BaK5?
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