Anyone know what this is called in English?

[Nisei]

When I was a kid our teacher used to put this at the end of our homework as a sign that everything was OK.
I have no idea what it's called in English though. Does anyone know?

[BobK]

I've never seen it used as a sign of approval. It looks very like the typesetter's mark meaning 'delete'.

b

[birdeen's call]

It could simply be his signature.

[Tdol]

I have never seen it used in English- could it be something particular to Dutch?

[5jj]

It reminds me very much of the 'H' former boss of mine, a German whose name began with that letter, used to scrawl on my expenses claims to signify his approval of my figures

[Raymott]

I've never seen it used as a sign of approval. It looks very like the typesetter's mark meaning 'delete'.

b

The top line on here seems to indicate that:
JournalismCareers.com - standard proofreading symbols, proof-reading, proofing marks

[youandcorey]

What was his or her name? I'm betting it was an initial.