Merrell Wrote:
-------------------------------------------------------
> Thanos5150 wrote:
>
> << ... in a relieving chamber of G1 there is a
> worker's mark that notes the 17th cattle count
> ...
>
> Could you indicate whereabouts this is, and in
> which relieving chamber?

It transpires that this question was discussed some years ago. That particular discussion referred to a much earlier archive discussion (scroll down to "persistent error," as shown here). The discussion subsequently continued here.

So, as that final post makes clear, the year 17 inscription "was never there."