I would want more information-though I personally cannot answer the questions.

What size are the reels, 7”, 10”, 14”? How wide are the tapes - quarter inch, half inch, etc, and what do the printed boxes say in full?

Agfa tape types are listed on the left column of this list:
<http://www.aes.org/aeshc/docs/basftape/basftapes.html>

And are those numbers handwritten or printed? It may be that they are sequential reel numbers, or take numbers, and the K could be the engineer or the artist…
<L>
Lou Judson
Intuitive Audio
415-883-2689

On Jun 1, 2017, at 8:33 AM, Peter Hirsch <[log in to unmask]> wrote:

> I am forwarding this to ARSC-LIST, though it seems quite possible that the
> label markings are unique to this bunch of AGFA tapes and have nothing at
> all to do with any common audio-related system. I could be wrong, so here
> it is. If anyone has usable information, I will send on back to the
> ARCHIVES-L list.
>
> Thanks,
>
> Peter Hirsch
>
> =============================================================================================================================
>
> I have a number of what I believe are reel-to-reel audio tapes. They are
> (at the moment) housed in AGFA-GEVAERT boxes (a Belgian-German
> multinational corporation that develops, manufactures, and distributes
> analogue and digital imaging products and systems). What is challenging to
> me are the markings on the labels. There lists on each box of numbers such
> as 29/1 K, 30/1 K, 30/2, 30/3 K, 30/4, 30/5 K, 31/1, 31/2 K, and so on.
>
> Can anyone tell me what these cryptic letter/number combinations mean?
>