i have got several parrot accordions before, production date from 69, 78, 82, 90, 91 and 2003, the older they born , the better sound they have, now most or them are sold, just leaving 69 and 78 in my hand.
2003 and after suck , as it uses rubbish wood , it sounds rubbish, you can easily see the difference from the logo material, if it uses plastic , do not buy. (yours do not.)
early parrot accordion (maybe before 85') use metal material instead of silver cloth inside front panel. it sounds big and bright. (my 90 use cloth likes yours.)
my 90 and 91 use different keyboard, 91 and after use purely plastic keyboard and 90 and before wood material, 91 sounds much inferior to 90. if you can see black wood from the top on the white keys , it made before 91.
my 69 uses brown leather stamp strap, very durable, beautiful and good quality, even it have 40+ old, you still have tight bellow and not air leaking problem.
if you can find cheap and old parrot accordion, good for you, it values high than you paid, but if you can find old italian accordion with the similar price, bye bye chinese accordion.