"Northern School" is a copy after Goltzius

In the interesting but somewhat overestimated Boetto auctions (28-29 September, Italy, see the previous few days), they sell, apart from unidentified things like a potential Johann Karl Loth and a Titian copy, also this "School of the North, 17th Century" Concertino, estimated at 4,000 to 4,500 Euro.

It is a copy after Hendrick Goltzius, Dutch late 16th-century printmaker and occasional painter. Better versions of the work can be found online, but the best version I know of is the original Saenredam engraving after Goltzius (the copy pictured comes from the Rijksmuseum).

It would be great to find the original or something that may be it: but for a copy (although a fairly good one), the estimate seems on the high side.

UPDATE: not sold, again as expected.