Light bulb experts?

[Yuxi]

Evening all,

Out on the bike tonight near the river and I came to a bit where a dyke was being cleared/dugout, amongst all the mud I saw a light bulb. I took it home and cleaned it up, pictures below. Its just over 10 inches long, 2.5 inches diameter at the bulge and about 1.5 inches diamter across the thread. There are no markings on it.

Any idea what it is?

[mybrainhurts]

Yuxi said:

Out on the bike tonight near the river and I came to a bit where a dyke was being cleared/dugout,

• *snigger***

It's a valve, old boy...

[Plotloss]

Old fashioned street lamp?

[twister]

Arc discharge lamp of some sort.

[Who me ?]

Plotloss said:

Old fashioned street lamp?

But it could be that someone mistook it for a bulb and planted it in the earth ( tongue in cheek jest -in our industry things that light are lamps - bulbs are planted )

[Raverbaby]

Yep, High Pressure Sodium lamp with internal igniter.
As mentioned above,maybe its from a streetlight nearby.

[Big_Dog]

Looks like either a SON-T lamp. Sodium Oxygen Nitrogen Tubular they do an Elipsoidal one too or a SOX lamp (streetlight). Fitting looks like GES Giant Edison Screw.

[vdp1]

It's not a sodium, looks more like an old mercury vapour or possibly metal halide.

[dudleybloke]

a perfect excuse to start growing weed!