![My vintage calculator collection. I find it amazing how durable these machines are. All still in good working condition. I did get a little carried away with retro brighting my HP-97 😢 : My vintage calculator collection. I find it amazing how durable these machines are. All still in good working condition. I did get a little carried away with retro brighting my HP-97 😢 :](https://preview.redd.it/3wpzc88hg5y71.jpg?width=640&crop=smart&auto=webp&s=76cd0affbc9fa51ddb277414a1cfb0ba97e25d56)
My vintage calculator collection. I find it amazing how durable these machines are. All still in good working condition. I did get a little carried away with retro brighting my HP-97 😢 :
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![My vintage calculator collection. I find it amazing how durable these machines are. All still in good working condition. I did get a little carried away with retro brighting my HP-97 😢 : My vintage calculator collection. I find it amazing how durable these machines are. All still in good working condition. I did get a little carried away with retro brighting my HP-97 😢 :](https://preview.redd.it/o4lfihehg5y71.jpg?width=640&crop=smart&auto=webp&s=9617617c6514c1b95918be2f5df50d2c97e796c4)