Have never seen washers with markings indicating "this side forward" or similar on original washers but almost always on replacement examples.
Markings on the rubber bushings can be between NOS (service parts) and originals and there may be some variations if more than one supplier was used and in those cases we should find differences between plants (east to west)
Just posted a group of pictures in another thread covering the disassembly (well partical) of my 69 Boss of the original strut rod bushings that might help address some questions so posting a duplicate set of pictures here also - Hope it helps
Face of front strut rod washer and bushing. Seen a few rattle can passes of black paint over its short 30K miles
But it did protect the finish under the black. You can still make out the blue (often found teal also) peeking out through a chip or two in the black. This end is the thinner end of the long inner liner that is forced over to hold the bushing and washers in place and the easier of the two to rework/remove
Back side of the bushing assembly - more black rattle can
After the lip of the inner steel liner was removed with a careful application of a small grinder and some hand tools the assembly (minus front bushing) reassembled to show the order and direction of each bushing as found on car.
Both longer and shorter inner steel liners together
Just the shorter liner. Notice the small amount of markings on the lip of the liner at the bottom
Front and rear washers (painted is the forward washer) Front washer shows a "flying" F in a circle. This "maker's mark" can be found on washers used on both small and big suspension strut washers built at Dearborn at least
C8OA-3A140B rubber insulator markings
Inverted T and a HOC (possibly supplier) markings
Engineering numbers
C8OA-3A225A rubber insulator markings (bottom most is the original)
