Here are six light blue signals -- all for just $20 plus actual postage

Skirt Incuse LOCKE / 44 / U.S.A. -- VNM

no markings -- cool style and great mottled glaze! tiny flake

dome incuse -- PINCO-N -- VNM

Great blue with inkstamp CP -- VNM

neat flat style in an early gray-blue -- no issues - VNM - the base has a small indent not a chip

skirt incuse - V in a rectangle -- VNM