קוֹלְבּוֹן, (κόλλυβος) rate of exchange, agio. Shek. I, 6 ואלו שחייבין בקו׳ Y. ed. (Mish. a. Bab. ed. בקל׳) the following persons are bound to pay agio (on their half-Shekel). Ib. 7 וכמה הוא ק׳ וכ׳ and how much is the agio? A M’ʿah silver. Y. ib. 46ᵇ קוֹלְבָּנוֹ תורה (Bab. ed. קל׳) the premium he has to pay is intimated in the Torah (Ex. XXX, 13, because he has to pay the silver value of half a Shekel). Ib. bot.; Tosef. ib. I, 8; a. e.—Bekh. 50ᵃ ק׳ לפרוטרוט (not קיל׳) the dipondium is agio (an addition) to the units (making fifty, as a round sum, instead of forty-eight, v. Tosaf. a. l.).—Pl. קוֹלְבּוֹנִין, קוֹלְבּוֹנוֹת, קָלְבּוֹ׳. Tosef. Shek. l. c. חייב שני ק׳ is bound to pay double the agio. Ib. וק׳ אלו מה עושין להם and what is done with those agios? Shek. I, 6 ק׳, a. קוֹלְבָּנ׳ Y. ed. (Mish. ed. קלבו׳; Bab. ed. קולבנ׳).