Frame for Han-satsu size

There is one stain on the mat.

The stain is located in the center, 15 cm from the top edge.

The frame measures 169 cm (height) x 47.7 cm (width) x 3 cm (depth).
The mat is 166 cm in height.

Since the Hanshi (half-size paper) is 136 cm in height,
I believe it may be hidden if the artwork is re-mounted.
There are no other issues.

The stain is just under 2 cm in height and just under 3 cm in width, resembling a stain left by cellophane tape.

I purchased this thinking it was new, as a friend told me it was new.
I have not used it since purchasing it from my friend.

It is a very nice frame with rounded corners. I am unsure of the wood type, but it is solid wood.
The mat is fabric and a light cream color.
It has a subtle pattern of button arabesque. I believe it is a very elegant frame.

As it has been stored at my home for a long time, I would like to ask those who understand this to purchase it. Thank you.