▁of ▁the ▁same ▁period . ▁The ▁Ib ane z ▁line ▁was ▁distributed ▁on ▁the ▁West ▁coast ▁of ▁the ▁U . S ., ▁while ▁the ▁Gre co ▁was ▁exclus ively ▁for ▁Japan , ▁and ▁Pen co ▁was ▁distributed ▁on ▁the ▁East ▁coast ▁of ▁the ▁U . S . ▁There ▁is ▁bit ▁of ▁variance ▁between ▁the ▁Pen co ▁ac oust ic ▁models ▁depending ▁on ▁what ▁year ▁the ▁guitar ▁was ▁manufact ured . ▁A ▁Pen co ▁A 2 2 M ▁may ▁or ▁may ▁not ▁have ▁an ▁adjust able ▁s addle ▁via ▁thumb s cre ws . ▁ ▁Also ▁some ▁of ▁the ▁models ▁have ▁book ▁matched ▁back s ▁while ▁others ▁maybe ▁tri - back ed . ▁ ▁Pen co ▁ac oust ics ▁had ▁solid ▁spr uce ▁to ps ▁and ▁l amin ated ▁back s ▁and ▁sides ▁of ▁map le ▁or ▁rose wood ▁depending ▁on ▁the ▁model . ▁The ▁A 2 4 ▁is ▁a ▁ 1 2 ▁string ▁ac oust ic ▁guitar , ▁with ▁a ▁solid ▁– but ▁relatively ▁thin – ▁spr uce ▁top , ▁rose wood ▁sides ▁and ▁back ▁and ▁a ▁ma h og any ▁neck ▁with ▁rose wood ▁finger board . ▁They ▁had ▁a ▁zero ▁f ret ▁and ▁a ▁sc rew ▁adjust able ▁bridge ▁mode led ▁after ▁the ▁Gib son ▁Heritage ▁J um bo ▁bridge ▁of ▁that ▁period . ▁They ▁sold ▁new ▁for ▁around ▁$ 1 4 0 ▁in ▁the ▁mid ▁ 1 9 7 0 s . ▁The ▁A 1 0 ▁was ▁a ▁solid ▁top ▁AA ▁or ▁A AA ▁size ▁Rose wood ▁L amin ated