ГДР

I bought these lamps one month ago and I am amazed Cables are intact and rubber is still looking fresh, in box there are 2 spare bulbs. These are using clothespin to hang on tree. IP20 rating. There are 10 bulbs wired in series, inside the box there is warranty paper and the date when it was made. AWESOME

The picture shows the oldest light bulb in my collection. I bought it last year. It's purple. It gets very hot. The filament is made from carbon.

NARVA HQA lamp with, from inside frosted outer bulb. From 1975 - very of of rare -  a FEW years the before the That time, the lamps Were Called HQA.

125W
1,15A
E27
7000h

A mercury vapor high pressure lamp from BGW with ignition electrode.

Lamp power: 500 W

Lamp current DC: 5.9 to 7.2 A

AC lamp current: 6.7 to 8.2 A

Lamp voltage: 70 - 85 V

System voltage DC: 110 V - 220 V + / 5%

System voltage AC: 220 V + / 5%

Lead Time: 5 - 8 min

Socket: M4 / M3 ignition electrode

Length: 172 mm

Light center: from the anode 70 mm

Burning position: Standing + / 20 °

Anode up

Ignition electrode not on the arc

Manufacturer: BGW

Lamp power: 400W

Socket: E40

A very early HQ lamp of BGW. One of the first high-pressure lamps. This lamp has a side-mounted auxiliary electrode.

Manufacturer: BGW

Lamp power: 120W

E27

A very early HQ lamp from BGW. Probably just a test lamp. The base of the lamp and the stamp of the lamp are very unusual.

Lamp power: 250 W

Lamp current: 2.13 A

Lamp voltage: 135V

Socket: E 40

Manufactured: 4th quarter of 1966