Here is a set of unique ashtrays for insulator related companies -- remaining set reduced to $25 or prices as marked - actual postage additional -- from left to right:

Top Row:

-- brown glaze - Westinghouse logo with an multipart insulator imprint in the porcelain - good condition -- $12 (view original for details)

-- Yellow -- LAPP INTERPACE -- good condition -- $15

-- Black glaze westinghouse astray - neat piece - one tiny nick on the bottom - $12

Bottom row:

-- White - INTERPACE LAPP INSULATOR DIV. -- Chipping under both skirts -- $3

-- Light blue -- PINCO JOSLYN Mfg. & Supply Co.-- Reduced to $12 (SOLD)

-- Nice green glaze marked KUHLMAN Electric Co - good condition - $8 (SOLD)

-- white ashtray marked LAPP Chemical Porcelain // Power Specialty Co. Houston-Dallas - good condition - $8