Without other detail.

--------------------------------------------------
Note added at 2003-05-25 17:41:21 (GMT)
--------------------------------------------------

An other possibility can be:
Without further due

+

--------------------------------------------------
Note added at 2003-05-25 16:37:53 (GMT)
--------------------------------------------------

When ending a letter, this is commonly used as can be seen in the Spanish-English Oxford Dictionary

particular2 m
a (frml) (asunto) matter, point; conocemos su opinión sobre este particular we know your opinion on this matter o point; sin otro particular saluda a usted atentamente
sincerely yours (AmE), yours faithfully (BrE)
b (persona) (private) individual; viajar como particular to travel on private o personal business; de particular (AmL) out of uniform


Quite often \"sin otro particular\" is used as an abbreviation for \"sin otro particular saluda a usted atentamente\"

...le reitero las seguridades de mi consideración distinguida.

No, ¨This being all¨ is the answer, it may be followed by the above or by anything else and surely by ¨Atentamente¨, ¨Sincerely¨

USA usage.

A locution like this is not used in letters in English, and a literal translation will sound very strange to the English speaker reading the letter. In place of this, the last sentence of a letter in English typically might say something like (depending on the purpose of the letter):

-We look forward to your reply.

-Thank you for your consideration of our request.

-Please let me know if I can be of any further assistance.

-Please do not hesitate to let us know if you require further details/information/.... .

Or an infinite variety of other possibilities; it depends on the subject of the letter.

In translating a Spanish letter to English, I always substitute the "Sin otro particular..." sentence with some typical phrase like one of these, because that is what the letter writer would have put if s/he had been an English speaker, and to end the letter in the Spanish way would sound weird to the English-speaking recipient.