Until early 1973 Triumphs had the
two-point bridge (with either Delrin or metal saddles)
Yours seems to have Delrin saddles
It may be that whoever made your current bridge used the existing saddles. If this is the case yours would have been natural mahogany rather than white (white was available from '75). Or it may be that these saddles are not original.
If it is this early it would have had the usual stamped 6 digit serial number rather than a decal.
Sometime in 1973 they went to the
three point bridge (always with metal saddles)
So, look under your bridge. Do you have three screw-in posts (or post holes) in a triangle, or just two?
Also, look at the
pot codes. You can get a date from these
The input jack on the control plate is a weak area on these - breaks there are common
They are superb basses - yours does need some attention, but well worth doing.
Value - typically these go on ebay for $800-$1800 depending on condition, completeness, colour etc etc. A fairly good, complete, player should go for $1000-$1200
Does the neck need glueing? A luthier can inject glue and refin the back of the neck to get rid of those cracks.
Yours is going to be on the lower end value-wise, but still very much worth sorting out. Fixing the cracks, adding the correct bridge, bridge cover and tuning keys will add value, as long as you don't overpay.