Vintage Iorio Accordion Italian Accorgan w/ Straps and Case 1960s - needs repair

Description

Vintage Iorio Accordion Italian Accorgan w/ Straps and Case #2716.  Black & Pearl.
ITEM IS BEING SOLD AS-IS.  PLEASE READ THE DESCRIPTION BELOW.
I do not know anything about accordions, not do I know how to play one.  This one comes from an estate sale, and I have no information on it other than what is listed.
It is not dated, but based off the serial number and others I found while doing research, I believe this is from the 1960s.
I don't know exact number of bass and treble keys, but I do know it is not electric and it is very heavy.
It did make noise, loud and clear.  1 piano key is lifted, but that did seem to function.  Without knowing anything about accordions, I don't know what else may need repair beyond that 1 key.  Original case is in good shape inside, the outside does have cosmetic issues and 1 small hole on the bottom (see pictures).
See photos for details.  Buyer will receive item as shown.  Ships via UPS Ground.  Sorry, no returns or international shipping available.
If you have any questions or concerns regarding this item, or its condition, please ask before buying.
THANK YOU!
I appreciate your positive feedback.