Istruzioni per scatole di costruzione impianti elettrici funzionanti anni 50 con pile tascabili o accumulatori o trasformatori per soneria 2 fogli 8 facciate dimensioni 21 x 15 chiuso Instructions for building boxes for electrical systems working from the 50s with pocket batteries or accumulators or transformers for ringer 2 sheets 8 pages size 21 x 15 closed Attention: international shipping costs are subject to variations depending on various factors independent of the seller. In the event of a confirmed change, the seller will inform the buyer that he can naturally cancel the purchase without any penalty or charge, granting the seller this right. It is also possible to ask for confirmation before purchasing.