Dev or scanning issue??

[srichards]

Just got the scans back from the Silbersalz I sent to AW. A couple of them have weird sludgy marks. This one shows it the best. Any ideas what caused this? It's not on every shot but a few other have a 'grubby' look as well. All taken on the Pentax 17. I've never used ECN2 film before. The area above left dragon seems to have dirty brown marks.

 

[srichards]

Another with similar brown marks:

 

[srichards]

Another weird mark on this one. Pale rather than brown. Bottom bit of big cloud just above the tall tree.

 

[jimmyjamjojo]

Impossible to tell without seeing the negatives, but given the similar placement in all of them I'd wager it's a scanning issue.

 

[Barney]

The marks look a pale blue to me
first horizontal
second two vertical, left and center
third horizontal (looks like some kind of writing)