Need to ask about a lot?

ECUADOR - 1870's-1990's EX DEALERS STOCK BOOKS A mostly used range presented chronologically on old manilla stock pages, in two, non philatelic three ring binders (one of postal issues, one of Airs & back of the book). An extensive range with many complete sets, with each issue identified by Scott Catalogue number with shade & postmark interest, unchecked in any detail, but at a glance, light duplication seen throughout, dotted with mint & better issues with 19th Century values seen to 5 Sucre used, Airs, Officials, Revenues, Telegraph stamps etc. Much of interest here! (guess 3500+ stamps)