This interesting calculator with date and time and a alarm clock from my collection : r/calculators
VINTAGE WORKING RARE MBO FORMEL 19 CALCULATOR | eBay
Victor 12253A Commercial Calculator - Dual Color Print - 3 lps - Big Display, Clock, Date - 0.75" (19 mm) - 12 Digits - Fluorescent - AC Supply/Power Adapter Powered - 4 - AA - 2.5" x 7.8" x 9.8" - White - 1 Each - VCT12253A
2 in 1 WirelessNumber Pad with Accounting Calculator,19 Key Wireless Numeric Keypad with LCD Screen,Slim Number Pad for Mac PC iOS - Walmart.com
File:HP 19B II calculator, open, power on, showing successful self-test (20191371831).jpg - Wikimedia Commons
Fraction calculator | Fractioncalculator.com
Wireless 2.4g Usb Number Calculator With Digital Display Rechargeable One Handed 19 Keys Numeric Smart Keypad Hot Sale Newest - Calculators - AliExpress
Wholesale KK-837B New Arrival 12 Large Display Calculator with 1 Pc AA Cell Unit Size 19*14*3.5cm Hotsale Wholesale in Africa_Calculator - winningmart.com
VINTAGE WORKING RARE MBO FORMEL 19 CALCULATOR | eBay
Mark-->'s Early LED Calculators
File:HP-12C programmable calculator.jpg - Wikipedia
TI-83 plus. Used this exact calculator when I was in high school and now use it to teach high school! Going on 19 years of ownership! : r/BuyItForLife
Pregnancy due date calculator - Flo
Vintage Casio FX 19 Scientific Calculator Fully Working Retro Calculator #Casio | Calculator, Scientific calculator, Scientific calculators