I repaired the chipped rim on this one of a kind Fred M.Locke piece so I thought I'd share a photo of it. It is the earliest version of the Locke #100 first shown in the 1902 catalog. This basic insulator became a very popular in later years for the 15-20kv range . These were initially made as a unipart non-glazeweld design with an applied crown in late 1901. The design was soon changed in early 1902 to be made as a non-glazeweld in a two part mold . There is some evidence they had puncture failures with these and the design was again changed later in 1902 changed and produced as a two part glazeweld the more familiar U-964 were made as glaze welds, multiparts and uniparts . The design underwent further changes in 1903 to strengthen the glazeweld joint and produce a more uniform shape to the outer skirt . sometime in 1904 or 05 the design was again changed as victor eliminated the use of two and three part molds and began producing all insulators as"green trimmed tie wire grooves. Production continued into at least the 1920's by Locke . This design was copied produced by the millions by every early manufacturer and used all over North America . This specimen has Marking 1-8a and is to date the only one with an applied crown that has surfaced.