Żwirki i Wigury Mystery Cache

A simple cache to celebrate a fine piece of street-art in the Pogodno area.

Puzzle

Find the piece of street-art along this street and fill in the missing information.

A - The first digit of the year in which the challenge took place

B - The last digit on the left wing (AHN 0?)

C - The price of the stamp in zloty

X - Number of aeroplanes visible

Y - Number of stamps visible.

Z - The third digit of the year in which the challenge took place

N 53 26.ABC     E 014 30.XYZ