Background. Source copy is in Orbis, an LC record from the 40's created by RECON. No usable cataloging copy in OCLC. Book in hand has a vendor record in Orbis.
Source copy:

Record to be cataloged:

Post-editing:

Comments:
Because the source copy uses pre-ISBD punctuation and the vendor has supplied basic description using ISBD, a better technique in this case is to edit the record for the new edition directly rather than use copy and paste or the Voyager copy command.
Variable fields are deleted from the vendor record: 035 6314675, 029, 045, 500, and 938. The 035 field from OCLC is retained.
020 was out of sequence; editing moves the field to follow MARC numerical order
040 ‡b spa is deleted, since English-language cataloging is being used. The vendor MARC21 codes are retained; ‡d CtY is added to the end of the 040 string to indicate that Yale cataloging did the editing.
The 050 00 on the source record can't be used since it is a classed-together number for a different series. Since there are no other editions in Orbis or OCLC that have a classed separately, the number needs to be assigned by a cataloger who has authorization to use ClassWeb. The class number assigned correlates to other bibliographic records with primary subject Military art and science--Early works to 1800.
The 245 introduces the name Laura Manzano Baena which is not associated with the source bibliographic record. Note other differences between what was in the source record 245 and what is transcribed in the record for the book being cataloged. Note that the source record does not use ISBD punctuation, but the vendor has done so for field 245 and all of the other descriptive fields.
The vendor has not bracketed Madrid. The place of publication does not appear on the item, but can be inferred, so it is entered in brackets. CIP on the verso t.p. provides the information about the place of publication in bracketed form, and it seems reasonable to accept this.
However, the 2003 date of publication in the CIP is not reliable. Although there is a copyright date of 2002 on the verso t.p., there is actually no explicit publication date. The following appear on the verso t.p.: "Depósito Legal: M-19951-2003" and "Fecha de edición: abril 2003." Neither are considered publication dates (the latter is a printing date). A date (i.e. 2003) appearing in a CIP on the t.p. verso is not considered a publication date either. Per AACR2 1.4F6, in the absence of a publication date the copyright date is used as the substitute in preference to the printing date (date of manufacture).
The publication date is recorded in 008 as Date Type s (single) Date/1 2002 Date 2/blank. This is a judgment call. The main text is a photocopy reprint of the 1583 publication but the substantial introduction can qualify it as a new edition rather than a Date Type r Date 1/2002 Date 2/1583. Items in this series are reprints; none of the titles were treated as reprints in 008 in other cataloged records.
The only change to field 300 was the addition of subfield ‡b for illustrations; the vendor has done the rest. The corresponding 008 field has been updated.
The vendor has not transcribed the series correctly in 440 and has not used the authorized form. As the authority validation window indicates, the form used on the vendor record is a reference, not the established form of the series.

However, note that the reference is to a different series.

NOTE: since the reference might cause a problem with MARS processing, consult with a cataloger authorized to do NACO work in order to update the authority record for the other series.
Although the Voyager Authority Verification does not retrieve the series authority record for the series on your book, that does not mean your series has not been established. You will need to search further in Orbis.
A Staff Title search on "Colección Clásicos" retrieves 86 headings.

TIP: A quick way to find the series authority record is to use a "keyword in staff" search. Since there are many series beginning with "Colección Clásicos," the series is probably qualified. The qualifier is usually by place or publisher.
Here is a "keyword in staff" search using "Madrid" as the qualifier:

In this case, the Madrid qualifier has already been used for a different series:

The other likely qualifier is the issuing body for the series. Since this is keyword searching, choose the least common term as the qualifier ("defensa") to reduce the number of records retrieved.

This retrieves the series authority needed:
The authority record:

If no record had been found, you would then have had to do a regular "find" type Staff Title Search and scrolled through the headings until you identified the appropriate series heading.
Because the series requires a qualifier, it has to be recorded in 490 1/830 form. Copying and pasting from the Series Authority Record is recommended, especially since diacritics are involved.
The subject subdivision on the source record is obsolete, something to watch out for when using old cataloging. A search on Military art and science--To 1800 in LCDB retrieves only one record. A search on Military art and science--Early works to 1800 retrieves over 600 records. Note that the subdivision is coded ‡v. Have a cataloger with a Cataloger's Desktop authorization check the Free-floating subdivisions list if necessary.
Headings. Garcia de Palacio is established. A 700 for Laura Manzano Baena is justified based on a scholarly introduction that is 25% of the publication. No NAR has been made for Manzano Baena. Because of the compound surname, references are needed, so the name needs to be established by a cataloger with NACO authorization.
RELATED DOCUMENTS
Variant Editions Checklist