Query on maker's mark

[Billman]

The above is the first time I have seen both images together - the Rotterdam tool is most certainly also a cooper's tool...

I would like to see the other side, to see if it is flat or fullered like the V&A tool, and also to see if it has single bevel.

Query, is it really 1400 to 1500 as stated by the museum, or much later, i.e. 200 years, which would make it late 1600 early 1700's?????