Here are five German porcelain insulators - actual postage additional:

Tiny U-1218 ink stamped with the Sonneberg flag logo as shown except for the number is 15 in good condition -- $8.00

U-1228 in brown glaze with the Rosenthal logo on the dome in good condition -- $8.00

U-1228 ink stamped with the Porzellanfabrik Jaeger & Co logo on the dome in good condition -- $8.00

U-1228 in green with no markings - found in Viet Nam but attributed to Germany in good condition -- $25.00 (SOLD)

U-1244 ink stamped with the Johann Haviland logo on the dome in good condition -- $8.00

Or take the remaining four for $25