The first SPAD XIIIs arrived in Poland in August 1920 and were used in fighter squadrons until 1923.

The Sopwith Camel was imported in October 1920 and crashed in Lviv in 1921.

So, initially, they were painted without a frame (1918–1921).

During the war, they were repainted with a frame (1921–1993).

But they were always the standard red and white, both with and without a frame.

(What's in the paint package) is incorrect.

Because this paint scheme was only in effect from around 1993 until today.

Where the checkerboards were reversed 90 degrees.

And this is the Polish aviation checkerboard pattern that has been in effect since 1993.

I have the reference files and paint patterns, but I don't know how to attach them to a forum post.