Hi could someone tell me what car models the following 2 heads came on?

1. Cast in head:

130 01620 01 and:
280 S/A

2. The other head has:

127 010 50 20

(This head came on the engine for a 230SL, which I think has the correct block, but not the correct block serial number.)

Any help would be greatly appreciated.

Thanks,

Ron

__________________
1971 220D, daily driver, new paint, 142K
1973 220D, low compression
1975 300D, back on the road! 166K
1971 220D, salvage, rear hit, engine excellent
1972 250, bad cam, but runs!
1971 230, engine stuck
1971 220D, low compression, rusty
1976 240D, salvage, engine excellent
1966 230SL, water in oil after rebuild