Reconditioned Speedometer SN6144/00 BHA4478 1040 Turns-per-Mile.  

Fits any MGB or MGB GT originally fitted with a 1040 TPM Speedometer, but is the correct part number for MGB '62-'67.  Chassis 101 - 138400 without Overdrive

The number of Turns-per-Mile is written on the face of the Speedometer next to the SNxxxx/xx Part Number

New Chrome Bezel and Glass.  Fully reconditioned.  Ready to fit

Comes complete with Thumbscrews, Trip Rest Knob and Rubber Dash O-Ring gasket.