H 40W/Warm Weiss (Tež Tesla (tt))

The picture shows the tubes I got last year together with Tesla 40W DS tubes. I started arranging the gallery and I decided to place these tubes separately in relation to Tesla because they differ in a brand that is unknown for now because one man told me that they are not NARVA's productions.

Uplate: Tubes are from tt (Tež Tesla).These are export made, but ended up being sold on local market by mistake.