I sent this to Tom Conroy and he suggested that everyone might appreciate it:

https://www.flickr.com/photos/ruby1638/38890586120/in/dateposted-public/

Left one with machined knob (instead of the earlier cast knob), rectangle logo,
and number on side has a full 13/16” bed

Center one with machined knob, rectangle logo, and number on side had a “U”
shaped bed -  machined 1/4” across the throat but then two machined legs in the
same plane up each cheek that hold the sides of the blade

Right one with machined knob, rectangle logo, and NO number on side had a small
bed - this one was obviously a 1980’s/90’s tool with the big slots in the blade
and the chunky, unrefined castings - notice the non-machined edges on the cheeks
and on the cap.  This later plane has a different depth adjusting mechanism.


And here are a couple of others in the family:

https://www.flickr.com/photos/ruby1638/40701228901/in/dateposted-public/

Left one is a rarely seen 60 - same as a 60-1/2 except with nickel plated mouth
knob and cap.  This one has the cast depth knob, no number on side, and a
sweetheart blade. Has a 13/16” bed like the 60-1/2 above.  Lovely little plane
that seems much more delicate than a 60-1/2 although it is essentially the same.

Center one is the even more rarely seen 61 - same as the 60-1/2 except for non-
adjutable mouth and wooden knob, cast depth knob, no number on side, and a
sweetheart blade.  Has a 3/4" bed - less than the 60 above.

Right one is a 65 - cast depth knob, knuckle joint cap, no number on side, and a
sweetheart blade.  Has a 13/16” bed.  This is one of my users.

Ed Minch