M
| No. | Town | Firms | Initials | Years | |
|---|---|---|---|---|---|
| 01. | M&Co (weave) | Pic | |||
| 02. | Madrid | Manuel Castro Lopez | M.C. | Pic | |
| 03. | San Sebastian | Conde y Repiso, S.R.C. (Libreria Internacional) | M.C. | Pic | |
| 04. | San Sebastian | Manuel Conde Lopez (Libreria Internacional) | M.C. | Pic | |
| 05. | M.D. | Pic | |||
| 06. | Bilbao | Manuel Grande Nieto (Para las Administraciones de Bilbao y Benavente) | M.G. | Pic | |
| 07. | M.G. | Pic | |||
| 08. | Barcelona | Muller Hermanos | M.H. | Pic | |
| 09. | Bilbao | Maurice Ledoux & Co | M.L | Pic | |
| 10. | M.M | Pic | |||
| 11. | MA | Pic | |||
| 12. | Madrid | Miguel Albero Mojica | MA. | Pic | |
| 13. | Cordoba | MASO | Pic | ||
| 14. | Barcelona | Banco Mercantil de las Americas | MBA | Pic | |
| 15. | Malaga | MC | Pic | ||
| 16. | MCP | Pic | |||
| 17. | Jerez de Frontera (Cadiz) | Marques del Merito | MERITO | Pic | |
| 18. | Madrid | Max F. Bertowitz | MFB | Pic | |
| 19. | Jerez de Frontera (Cadiz) | M. Misa, Sucesor | MISA | Pic | |
| 20. | Sevilla | Miguel G. Longoria y C | ML | Pic |
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Last update: 2003.04.08