SOME OF THE MOST COMMON ABBREVIATIONS.

A or a, Arroba, Twenty-five pounds weight.
AA. Autores, Authors.
A.C. Año Cristiano, Christian year.
Art. or art. Artículo, Article.
B.L.M. { Beso, besamos, besa,}   I, we kiss; he, she kisses;
{ besan la mano, or  } they kiss the hands.
{ las manos,     }  
B.L.P. Beso or besa los piés, I kiss or he kisses the feet.
D. Dn. Don, Mr.
Da. Doña, Mrs.
Dr., D.D. Doctor, Doctores, Doctor, Doctors.
Exmo., Esmo., } Excelentísimo, Most Excellent.
Escmo.    }
Fr. Fray, Frey, Friar, Brother.
Ib. Ibidem, The same.
Ille. Illmo. Illma. { Ilustre, Ilustrísimo, } Illustrious, Most Illustrious.
{ Ilustrísima,    }
Ill. P.S. Muy poderoso Señor, Most powerful Sir.
N. Fulano, Such a one.
No. or Núm. Número, Number.
Nro. Nra. Nuestro, a, Our.
Onz. Onza, Ounce.
Orn. Orden, Order.
P.D. Post data, Postscript.
R.P.M. or Mtro. { Reverendo Padre } Reverend Father and Master.
{ Maestro,     }
Rdo. P. Reverendo Padre, Reverend Father.
S.Sn. Sto. Sta. San, Santo, or Santa, Saint.
S.A. Su Alteza, His Highness.
S.A.A. Su afecto amigo, Your affectionate friend.
S.M. Su Magestad, His Majesty.
Sr. Sor. or Sra. Señor or Señora, Sir, Lord, Madam, Lady.
S. Sria. or Sra. Su Señoria, His Lordship, Her Ladyship.
S.S.S. Su seguro servidor, Your assured servant.
V. Vd. Vm. or Vmd.   Usted, Your worship, you.
VV. Vs. Vms. or } Ustedes, Your worships, you.
Vmds.     }
V.E. or V. Esca Vueclelencia, Your Excellency.
V.M. Vuestra Majestad, Your Majesty.
V.S. Usia, (Vueseñoria,) Your Lordship.
V.S.I. Usía Ilustrísima, Your Grace.