Because of the wrong calendar on the back of this issue, "Estonian Telephone" had to overprint it. Now it's known at least 7 variations.

	Variation 1 - calendar (w/o overprint) NB! Many forgeries are known because of rarity this variation. Usually the common overprinted cards were used and simply washed away the overprint color. Be careful!
	Variation 2a - 1188 INFO silver print
	Variation 2b - 1188 INFO white print
	Variation 3a - Estpak Data Internet on lahe silver print
	Variation 3b - Estpak Data Internet on lahe white print
	Variation 4-1 - LOVE raadio silver print
	Variation 4-2 - LOVE raadio silver print overprint upside down
	Variation 5 - R-kiosk NB! One source says it's only 1-2 cards with that overprint exists. Extremely rare.

Chips used

Chip 1

ET 0049

ET 0051