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Note 2 - Marketable Securities and Investment Other Securities (Tables)
12 Months Ended
Sep. 30, 2024
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

In Active

         
  Markets for  Significant Other  Significant 
  

Identical Assets

  

Observable

  

Unobservable

 
  

and Liabilities

  

Inputs

  

Inputs

 
  

(Level 1)

  

(Level 2)

  

(Level 3)

 

Balance at September 30, 2022

 $-  $-  $(276,000)

Change in value of equities

  -   -   - 

Change in value of contingent liability

  -   -   - 

Additional Investment

  -   -   185,638 

Balance at September 30, 2023

  -   -   (90,362)

Change in value of contingent liability

  -   -   90,362 
Fair value of convertible notes        1,171,308 

Balance at September 30, 2024

 $-  $-  $1,171,308