1940's Berg Larsen Slant Signature Tenor Saxophone Mouthpiece 90 2 SMS

1940's Berg Larsen Slant Signature tenor saxophone mouthpiece, 90 2 SMS. The logo and facing numbers are very faded but can be seen on the shank of the mouthpiece with the correct light. The facing appears to be original and the tip opening measures .085". There is some wear to the outer portion of the right side rail which can be seen in the third and fourth pictures. Still, this is a remarkable and rare mouthpiece.