some more photo's
ps forgot to take one of the number written on the bottom of the bracket
there you can find the number 181

for me its a mystery...it has no 4 digit RIH number on the headsets,
but also no 3 digit Fongers/Rih number and letter at the headpost

than it can be a RIH cove...but to be honest with the parts mounted and the form of the lugs
the RIH plate at the headset that says Amsterdam (i believe the blue plate at a RIH cove says RIH Holland)
maybe i have to remove the paint at the front lug headset to see if there is a number on it...?