EXTREMELY RARE VINTAGE ANTIQUE BLOW TORCH SOLDERING IRON TOOL, PORTABLE

Description

EXTREMELY RARE VINTAGE
ANTIQUE BLOW TORCH SOLDERING IRON TOOL :
UP FOR AUCTION IS THIS EXTREMELY RARE VINTAGE  ANTIQUE BLOW TORCH SOLDERING IRON TOOL.   WHAT YOU SEE IS WHAT YOU WILL RECEIVE.
An unusual brass antique soldering torch. Length is 18 3/4".  I know very little about these old tools, so look at the pictures carefully for your enlightment.  There is printing on the inside of the large adjustment knob on top but it is hard to make out, it looks like at top is "Fullmenge 018 Benzine" some numbers under that which cannot make out for sure, then "made in GDR"    "Zu" on one side of the center screw and "auf" on the right side of the center screw. At the bottom of the knob is 59/2. (I think). Condition:  part of the black plunger knob is broken off (see pics) otherwise it appear in good condition.  Look at pictures carefully as I know very little about these types of old tools.
THANKS FOR LOOKING & GOOD LUCK BIDDING.
( large torch )
PERFECT RARE ITEM FOR THAT TORCH COLLECTOR, YOU MAY NEVER COME ACROSS ANOTHER TORCH LIKE THIS ONE IN YOUR LIFETIME.
bt