The Apple Support Downloads page provides the 10.9.5 Combo Update (approx. 982 MB) to upgrade an existing 10.9 system. Full ISO/DMG Images:
Hosted as a 5.7 GB optical disc image, available at the Internet Archive (10.9.5) . mac os x mavericks 10.9 iso and dmg image download
Offers specific build versions (e.g., 13F34) for legacy collectors on the Macintosh Repository site. The Apple Support Downloads page provides the 10