Here are some less common items as follows:

-- Clear plastic aerial spacer with mounting hardware -- marked KW PAT PENDING - $45 (SOLD)

-- large grey porcelain wire aerial spacer -- marked OLIVER ELEC. MFG. CO. / BATTLE CREEK MICH, U.S.A. / 606 AERIAL SPACER / MFGD. 1963 / PAT. PEND. -- $15

-- Small grey porcelain aerial spacer - no markings - $15 (SOLD)

-- Two early wall or floor tubes, unmarked but possibly Imperial or Thomas, one is VNM and one has a couple small chips at the base - $15 each or $25 for the pair