I came across this item in storage. Given that all the instruction numbers I encountered range from three to four digits, it leads me to believe that all the components date back to the period from the 1970s to the early 2000s.

However, a significant number of parts are missing. This became apparent when I attempted to assemble some of them according to the instructions, only to find that I couldn't complete the task.

At the very least, I can confirm that number 171 is complete.