Only a businesslike " Radio Margaritaville " plate marks the door.
2.
Plate marks sometimes have been trimmed off, however.
3.
Iron plates mark the " earthquake bolts " of the 1880s, which actually hold some buildings together.
4.
The Lf3 plate marks the end of temporary speed limits, but the end of a permanent speed limit was not usually shown.
5.
Copper-plate engravings are more likely to be on cotton-rag paper and will be less detailed and bear more pronounced plate marks _ the imprint line left on the paper by the plate edges.