| | ID. | Descrizione | Modello | Produttore | Data Pr. | Nr.Seri | Pag. | Reg1 | Reg2 | Reg3 | 4 |
| 42 | | INZADI | M56S | G. Inzadi - Milano - | 1955 | 257169 | 7 | 9 | 0 | 9 | 0 |
| 136 | | INZADI | I | Giuseppe Inzadi | 1930 | 7 | 8 | 0 | 8 | 0 |
| 111 | | KEN+ADD | Ken+Add Machines Co. | 6 | 4 | 0 | 4 | 0 |
| 22 | | LAGOMARSINO | 5301 | Lagomarsino-Fabbrica | 1958 | 066007 | 8 | 10 | 8 | 18 |
| 77 | | LIGHTNING ADDING MACHINE | Lightning Adding Machine | 030857 | 8 | 7 | 0 | 7 | 0 |
| 7 | | LIGHTNING CALCULATOR | CALCULATOR | 1908 | 6 | 7 | 7 |
| 109 | | MARCHANT | B | Marchant calculating | 1911 | 75447 | 8 | 9 | 10 | 18 | 0 |
| 120 | | MARCHANT | XL | Marchant Calculating | 1922 | XL 939 I4 | 7 | 9 | 9 | 18 | 0 |
| 68 | | MELITTA | VII 16 | Fortuna-Werk VEB, | 1955 | 4 | 10 | 8 | 16 | 0 |
| 67 | | MELITTA | VI 16 | Fortuna-Werk VEB, | 1954 | 7 | 10 | 8 | 16 | 0 |
| 79 | | MERCEDES EUKLID | 29 | 1934 | --------------- | 7 | 12 | 9 | 6 | 0 |
| | ----- |
| 124 | | MINERVA | Soemtron e Minerva | 1955 | 26865 | 7 | 10 | 8 | 13 | 0 |
| 73 | | MONROE | LX 160 (?) | Monroe Calculating | 1950 | 7 | 0 | 0 | 0 | 0 |
| 18 | | MONROE | K | Calculating Machine | 1915 | 5 |
| 70 | | MONROE | LX 160-X | Monroe Calculating | 1950 | 644608 | 7 | 0 | 0 | 0 | 0 |
| 103 | | MULDIVO | C | Muldivo - Made in London | 1911 | 7 | 0 | 0 | 0 | 0 |
| 90 | | NISA | K | 1957 | 12-16598 | 7 | 8 | 8 | 16 | 0 |
| 135 | | NUMERIA | 9200 | Numeria Lagomarsino | 1956 | 6 | 10 | 8 | 18 | 0 |
| 133 | | OLIMPIA | 1182.030 | Olimpia Weke Ag. | 1960 | 6 | 8 | 0 | 9 |
| 50 | | OLIPIMATIC | SK | Made in Germany | 720475 | 4 | 8 | 0 | 0 | 0 |
| 59 | | OLIVETTI | SUMMA PRIMA 20 | Ing. C. Olivetti Ivrea | 1969 | 6 | 0 | 0 | 0 | 0 |
| 58 | | OLIVETTI | SUMMA 15 | Ing. C. Olivetti Ivrea | 6 | 0 | 0 | 0 | 0 |
| 56 | | ORIGINAL ODHNER | 37 | Willgodt T. Odhner of St. | 1935 | 287650 | 8 | 10 | 8 | 13 | 0 |
| 69 | | ORIGINAL ODHNER | mod. 8 | Willgodt T. Odhner of St. | 1910 | 100876 | 8 | 0 | 0 | 0 | 0 |
| 115 | | ORIGINAL ODHNER | H 10 S | Original Odhner | 1955 | 19311 | 7 | 0 | 0 | 0 | 0 |
| 138 | | ORIGINAL OTHNER | 125 | 777627 | 5 | 0 | 0 | 0 | 0 |
| 76 | | OTIS KING | Z | Made in England | 1950 | R2847 | 8 | 0 | 0 | 0 | 0 |
| 78 | | PANGBORN ADDING MACHINE | The Calculator Corp. | 1908 | 8 | 7 | 0 | 0 | 0 |
| | sabato 5 gennaio 2002 | Pagina 3 di 5 |