Brand new, never mounted 24V VDO fuel gauge.  I ordered from a retailer who incorrectly listed this as a 12v gauge, and I didn't notice until after I had opened and disposed of the original packaging.  Listing as used condition since it has been opened and I don't have the original packaging.

52MM (2-1/16") diameter
60/90 – 0.5 Ohm, 24V

I believe this is identical to VDO PN 301-040-002 except that this 003 gauge face reads E to 1/2 to F rather than 0 to 1/2 to 1/1.  Regardless, it is important that the ohm range of your sending unit matches the gauge you choose, in addition to being the right supply voltage.