Comparison between SAGE1CJ053634 and the sources that exhibit the previously known extremes in either the 10 μm feature strength, (PG 1351+640; Hao et al. 2005) or the decline towards the far-IR, (PG 1626+554; Netzer et al. 2007). Both PG 1351+640 and PG 1626+554 are peculiar sources, that are far from being proto-typical. The diamonds indicate photometric measurements with their 1σ error-bars and arrows indicate the 3σ upper limits. The drawn lines show the IRS spectrum exhibiting the silicate emission features of each source. SAGE1CJ053634 stands out by the fact that most of its emission falls in the mid-IR range.