"Ho-Tu grinned. "Call the smith!" said he to the guard. "Plate collars!"
(...) When the smith arrived, he took, from a rack in the wall, two narrow, straight bars of iron, not really plates but narrow cubes, about a half inch in width and fifteen inches in length.
The girls were then motioned to the anvil. First Virginia and then Phyllis laid their heads and throats on the anvil, head turned to the side, their hands holding the anvil, and the smith, expertly, with his heavy hammer and a ringing of iron, curved the collar about their throats; a space of about a quarter of an inch was left between the two ends of the collar; the ends matched perfectly; both Virginia and Phyllis stepped away from the anvil feeling the metal on their throats, both now collared slave girls.
"If your training goes well," said Flaminius to the girls, "you will in time be given a pretty collar." He indicated Elizabeth's yellow enameled collar, bearing the legend of the House of Cernus. "It will even have a lock," said Flaminius.
(...) "I will decide if and when they receive a lock collar," said Sura."Assassin of Gor
Shipping collar
"I have a collar here," said Ulafi, lifting a steel slave collar. It was a shipping collar. It had five palms on it, and the sign of Schendi, the shackle and scimitar. The girl who wore it would be clearly identified as a portion of Ulafi's cargo" Explorers of Gor
Collar sleeves - Slipped over collars usually for the purpose of "matching" the collar to the slave's garments
""What is this?" I asked.
"The silk?" she asked. "That is a collar stocking, or a collar sleeve. They may be made of many different materials. In a cooler climate they are sometimes of velvet. In most cities they are not used."" Kajira of Gor
""The purpose of the collar sleeve is to hide the collar," I said.
"No, Mistress," she said. "Surely the collar's presence within the sleeve is sufficiently evident."
"Yes," I said, "I can see now that it is."
The girl smiled.
"The yellow fits in nicely with the yellow of your belt," I said, "and the yellow flowers on the tunic."
"Yes, Mistress," smiled the girl. The sleeve I saw now could function rather like an accessory, perhaps adding to, or completing, an ensemble. It did, in this case, at least, make its contribution to the girl's appearance. "The belt is binding fiber, Mistress," said the girl, turning before me. "It may be used to tie or leash me, or even, coiled, to whip me."" Kajira of Gor
Transport Collars - Transport to the block or the buyer
"Our hands, too, those of all of us, were secured, braceleted behind our backs. We all, too, had new collars on our necks, probably transport collars. They had metal tags attached to them" Dancer of Gor
Work collars - Part of a work chain
"The two girls, on their hands and knees on the deck, linked together by a gleaming neck chain, some five feet in length, attached to two steel work collars, these fitted over their regular collars, looked up" Explorers of Gor
Collar Types - by Culture
Bead collars of the Red Savages
"The collar used in the Barrens by Red Savages. Rather than the commonly used inscription, the collar is made in a color and pattern code which is unique to each man, thus identifying the slave's owner." Savages of Gor
"The red savages do not use steel collars. They use high, beaded collars, tied together in the front by a rawhide string. Subtle differences in the styles of collars, and in the knots with which they are fastened on the girls' necks, differentiate the tribes. Within a given tribe the beading, in its arrangements and colors, identifies the particular master. This is a common way, incidentally, for warriors to identify various articles which they own." Savages of Gor
"It was about an inch and a half high. It had a distinctive pattern of beading. The colors and design of the beading marked it as Canka's. It is common among red savages to use such designs, such devices, to mark their possessions. A collar of identical design, back in the village, was worn by the lovely, red-haired girl, the former Miss Millicent Aubrey-Welles, who had so taken the fancy of the young warrior. Both of our collars were tied shut. The knots on them had been retied personally by Canka after our arrival at his camp. This is done, in effect, with a signature knot, in a given tribal style, known only to the tier. This gives him a way of telling if the knot has been untied and retied in his absence. It is death, incidentally, for a slave to remove such a collar without permission. It can be understood then that slaves of the red savages do not tamper with their collars. They keep them on."Blood Brothers of Gor