oddity, commonplace, rareness, norm, novelty, de rigueur, throwback, impressiveness, staple, characteristic, occurrence, abundance, peculiarity, phenomenon, allure, occupational hazard, epitome, crapshoot, vogue, handful, regularity, unobtrusiveness, hallmark, truism, misnomer, rara avis, afterthought, unpretentiousness, redpoll, gem, polydactylism, bizarreness, jewel, necessity, plenitude, oxymoron, unusualness, feat, cachet, ubiquitousness, commonness, scarceness, quotability, superfetation, fickleness, provenance, anathema, distinguishing characteristic, briefness, paucity, curio, unimportance, timelessness, unsung, unpredictability, significance, dearth, impossibility, plentitude, lilliputian, heyday, uniqueness, delicacy, evenness, incongruity, gaudiness, tameness, dicey, puniness, infrequency, sumptuousness, denseness, anachronism, reverence, predominance, sparseness, untalked, ivory gull, renown, basset horn, trappings, formality, headiest, mintage, compactness, ubiquity, holy grail, byword, exception, grandness, unlike, relative, ordinariness, spryness, changeability, pastime, quirkiness, mystique, anomaly, enigma, trait, priciest, rarities, cheapness, fineness, largeness, originality, aptness, brilliancy, lack, pertinence, scarcity, smallness, closeness, improbability, lightness, richness

collector's item, piece de resistance, showpiece

antique

denseness, density, scarceness, scarcity, stuff, sundries, sundry, whatchamacallit, whatsis

curio, curiosity, infrequency, low density, oddity, oddment, peculiarity, rareness, tenuity