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threads changes from rim to rim. Width varies as well, ranging between the thin thread of TR 20 and the much wider thread of TR 34. Generally, the trailed decoration is of poor quality. It has suffered the effects of corrosion, and areas of discoloration and irregular chipping patterns are often seen. In some instances the threading is no longer visible on the exterior, being hidden beneath layers of milky iridescence. The vessel colors represented among the threaded rim fragments are yellow-green, green, blue-green, blue, amber, and purple, each appearing in light to dark hues. The majority of the fragments are light green. Few fragments are blue, with TR 29 being the only example of a completely preserved blue rim. Amber does not appear as frequently as the other colors. Swirls are common. There are no examples of purely purple rim fragments, and clear glass is rare. Thread coloring maintains a continuity with the glass colors , green and its intensities continuing to be prominent. Blue trails appear infrequently and purple is rare. On a few fragments blue and purple appear together, with the blue serving as an outline to enhance the purple. Because of the wide variety of vessels represented by these threaded rim fragments, there is a large range of rim diameters , from the smallest, at only 3 cm, to the largest, at possibly 21 cm, although many fragments are too small to allow accurate estimates. Acommon feature in the cullet at Serçe Limanı is threaded or trailed decoration on rims and upper necks (Fig. 38-1). Although trailed decoration has been noted in other chapters, the fragments that cannot be categorized elsewhere demand individual attention. Because little glass below the rims is preserved , it is not possible to identify the types of vessels from which these fragments came. The designation TR is given to 60 fragments of which over 50 of the rim is preserved, or which are so unusual that they cannot have come from vessels cataloged elsewhere. Those fragments preserving less than 50 of their diameters are not cataloged separately because the possibility exists that they belonged to cataloged vessels. During manufacture the thread is either incorporated into the glass, giving the exterior a flat surface, as in TR 1, or remains on the outside, as on TR 23, producing a ridge. The decoration is applied in one of three locations: along the rim edge, or lip; directly below the lip; or a combination of the two where the thread begins at the lip and coils down. Further, the number of threads applied to vessels varies. There can be from one to three on a rim. This creates an easy distinction between single-threaded and multiple-threaded rims. A problem arises, however, when a single thread is spiraled down the rim. In this instance, a single thread is quickly recognized when the entire rim is preserved, but when only a small fragment remains the exact number of threads applied is indeterminable. In addition, the spacing between such # C H A P T E R 38 Threaded Tops of Unknown Vessels Jennifer Bouchard Illustrated by Berta Lledó 402 part xi: vessel fragments TR 1. Threaded rim. Inv. No. GW 1766. Fig. 38-2. N3. Rim diam. 0.12; throat diam. 0.065. Yellow-green with purple swirl; blue-green thread of varying thickness, partly discolored. Small part of sloped shoulder remains. There are four fragments of this type that preserve 25–50 of their rims: Green with light amber swirl, blue-green thread, est. rim diam. 0.18, est. throat diam. 0.07. Light green with purple swirl, blue-green thread, est. rim diam. 0.11, est. throat diam. 0.07. Light green with purple swirl, light blue-green thread, est. rim diam. 0.078. Green with dark blue-green thread, est. rim diam. 0.06–0.07, est. throat diam. 0.05. These come from M6, N3, N4, O3, and P6. In addition, there are 27 fragments that preserve less than 25 of the rim: ten yellow-green with blue-green thread (N3, N4, N5); three green with purple swirl and green thread (L4, N6, P5); two green with blue-green thread; seven light green with purple swirl and blue-green thread (N4, O4, O6, Q7); one amber with purple swirl and dark blue-green thread (N3); one green with green threading (O4); two green with amber threading (N3, N7); one clear with blue threading (M5). The following, TR 2–4 and fragments...

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