Repair help?

[Ben-jammin]

Most of these early instruments were hi/lo boxes where the low reeds on the treble side were engaged or disengaged with a mechanical device (coupler) usually a palm switch on the back edge of the keyboard. On the top of the accordion I think I see a tan button that is likely the indicator to show if the low reeds set is engaged or not. So I think this is a hi/lo instrument and there should be a mechanic device to toggle between the two registrations.

 

[Ventura]

typically in that era, an LMMM accordion, at least here
in the USA, had a wide bar just in front of and below the
Keyboard.. pressing this bar would mute or open the L reeds
so the accordion would have, basically, one "Master" position
and one "Musette" position

this was usually achieved by a clever cam system on the linkage
that moved/slid under the keybed, moving a pivot which slipped
position right or left each time.. the previous owner who removed
the pivot rod may have also removed other mechanical parts too

 

[Accordion guy2010]

Most of these early instruments were hi/lo boxes where the low reeds on the treble side were engaged or disengaged with a mechanical device (coupler) usually a palm switch on the back edge of the keyboard. On the top of the accordion I think I see a tan button that is likely the indicator to show if the low reeds set is engaged or not. So I think this is a hi/lo instrument and there should be a mechanic device to toggle between the two registrations.

Yah it does have a palm switch

 

[KiwiSqueezer]

I think you need to find the 'Accordion Revival' web site. Most of your questions will be answered there!

 

[boxplayer4000]

Metal slides under the reed blocks move back and forward to shut off/allow air to pass to the reeds, thereby altering the tone of the accordion.
The couplers are the devices that engage with the metal slides and are commonly on the treble end, adjacent to the keyboard but some are on the long edge of the keyboard and some are a system of levers on the rear of the keyboard, all easily accessible to the player.

(In retrospect I see you have 'discovered' the palm switch on the keyboard edge.)

Like others are diplomatically suggesting on this site I also strongly suggest that your Geraldo accordion is not a good restoration prospect due to its dilapidated condition. There's endless better accordions from that era around. I also suggest, for a learner, one which is no more that 3 voices on the treble as these are so much easier to tune than a 4 voice.

 

[Accordion guy2010]

Metal slides under the reed blocks move back and forward to shut off/allow air to pass to the reeds, thereby altering the tone of the accordion.
The couplers are the devices that engage with the metal slides and are commonly on the treble end, adjacent to the keyboard but some are on the long edge of the keyboard and some are a system of levers on the rear of the keyboard, all easily accessible to the player.

(In retrospect I see you have 'discovered' the palm switch on the keyboard edge.)

Like others are diplomatically suggesting on this site I also strongly suggest that your Geraldo accordion is not a good restoration prospect due to its dilapidated condition. There's endless better accordions from that era around. I also suggest, for a learner, one which is no more that 3 voices on the treble as these are so much easier to tune than a 4 voice.

Well..I want it restore it and I’m not gonna go straight to tuning this this a bontempi reed organ I’m tuning to tune…not going well mainly cause I have NO CLUE

 

[Accordion guy2010]

Well..I want it restore it and I’m not gonna go straight to tuning this this a bontempi reed organ I’m tuning to tune…not going well mainly cause I have NO CLUE

The second image is for the chord buttons