Just brought it home today out of storage. Much better to have it in front of me instead of going off of memory.
Yes there is this behind the lower drawer:
R6R 1125832 A1741V. The A1741V is separate from the first set of numbers.
Looking at it, my guess is that it is an ammonia system. Surprisingly, the tubing looks great. No rust, corrosion, etc anywhere that I can see. It also works fine.
Now for the fun part. Locating parts for it. New door gasket and handle would make a good start