訓 ち ・ 音 セン
Sino-Vietnamese: thiên
十 (ten) with an extra slanted stroke added on top: ten multiplied up into a thousand. Only the little cap separates them.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
これは千円です。 (これはせんえんです)
This is 1000 yen.