Strange hobby? You betcha

Gulp, here it is. When I was a young man, I had a friend once who jumped into an ice breaking conversation I was having with a young lady by saying, ``Did you know Tom collects calculators!?'' Man, that put a stake in it. So when I met my wife-to-be, I waited until she had said ``yes'' to the proposal (right after she said, ``what are you asking again?'') and then told her the Dark Truth.

[For an explanation of these models (but not why someone would want them), see Dave Hicks' The Museum of HP Calculators]

In my collection:

• Classic series:
  HP-35 "red dot"
  HP-35 mid-model
  HP-45
  HP-55
  HP-65
  HP-67 (2)
  HP-70 (horay!)
  HP-80
  (missing: 35 late model)
• Top Cat:
  HP-97
  (missing: 91, 92, 97S)
• Woodstock:
  HP-21 (2)
  HP-22 (2)
  HP-25
  HP-25C
  HP-27
  HP-29C
  
• Sting:
  HP-19C
  HP-10A
• Spice:
  HP-31E
  HP-32E
  HP-33E
  HP-33C
  HP-34C
  (missing: 37E, 38E, 38C)
• Coconut:
  HP-41C (2)
  HP-41CX
  (missing: HP-41CV)
• Cricket:
  HP-01 (stainless steel)
  
• Voyager:
  HP-11C
  HP-15C
  HP-16C
  (missing: 10C, 12C)
• Clamshell:
  HP-28S
  
• Pioneer:
  HP-32SII
  HP-42S
  
• Other:
  HP-48SX
  HP-48GX
  HP-71B
  SR-40
  SR-52
  TI-55
  TI-57
  TI-59 (2)
  Rockwell 61R
• Peripherals:
  HP-41 Printer
  HP-41 Wand
  HP-41 Modules: PPC, IR Printer
  HP-41 Pacs: Standard, Math Pac (3)
  HP-65 Pacs: Standard, Finance, Navigation, Mathematics, Machine design
  HP-67 Pacs: Standard, Statistics, Games
  HP-71B Pacs: FORTH/Debugger
  HP-IL Casette drive
  HP-IL Video interface
  HP-IL Asynch I/O interface
  

Total: 30 odd calculators (so learn to add already! ok, ok).