Mamiya had SPOT and AVERAGING metering in the same SLR.
When it debuted in 1968, the 1000 DTL (
Dual
Thru-the
Lens) built upon the successful 1000 TL (
Thru-the
Lens) Series which preceded it in 1966. The TLs had been the first production SLRs to include a TTL spot meter ("partial" would have been a more appropriate descriptor for the square 10% bottom central chunk of the viewfinder that the meter measured from).
The DTLs steered even harder into the curve with a 6%-coverage
Spot meter (in the same location as the TL's) AND...the addition of a full-screen
Averaging pattern (thus the "Dual" part of DTL

). The user could simply push a switch on the left bottom side of the lensmount to select between "S" and "A"; no muss, no fuss.
This made the DTLs the first SLRs
ever to offer a choice of metering patterns.