4015 Rhoda Avenue
There are several of these up here. Elsewhere in town you’ll see marks from 1991, which are made with a different, better-made stampdifferent font and spacing, but the same lozenge shape. Just those two years (so far).
3745 Rhoda Avenue
This pushes G. Tribuzio still further into the 1950s. Note the partially obliterated part of the mark. He was using the full version as late as 1936 with his address, 425 Market Street.