The meaning of モン in 上手いモンでしょう


The main characters younger sister showed him some scribbles she had done in
her textbook and then said 「上手いモンでしょう」.

My question is whether it is [definition 5
here](http://kotobank.jp/word/%E7%89%A9?dic=daijisen&oid=18293900) or whether
モン refers to the scribble itself.




It is definition 5-㋑.

「[上手]{うま}いモンでしょう」 is, in my own words, an " **exclamatory rhetorical
question** ".

= **_"Looks awesome, doesn't it?"_**

The "statement" form using this 「もん」 would be 「上手いもんだ/もんです」.

So, 「モン」 does not refer to the scribble itself.

