Mainsheet block at port side of arch

[Velero49]

i have a couple of blocks, including one at the base of the arch. they have an "R" stamped on them. do you know who made this blocks?

 

[quadrille38]

I'd guess Ronstan

 

[Velero49]

Not Ronstan is like redden/redding.

 

[Patrik]

It's Rutgersson, a swedish manufacturer