Please see photos for more details

Please view all photos. Item condition may differ in judgement. What is photographed is the item for sale. Items are kept and stored in a pet free, smoke free environment. Any significant damage or issues will be photographed and noted. SHIPPING: All items are packed with care. Most purchases will be shipped within 1 business day. To combine shipping on multiple purchases, add items to cart. If this does not work, please reach out. All sales include tracking number as soon as item is packed.

HP-28S Hewlett Packard Advanced Scientific Calculator Reference Manual ONLY As good as new Same business day shipping 

1990 HP-28S Hewlett Packard Advanced Scientific Calculator made in USA in good working condition. It comes with original box, the owners manual, and the reference manual. The following tests were successfully performed: - Keyboard- Memory- Display- Infra-red communication (Printer)

Classic AR 28S Speakers owned by me from new. They produce a classic sound from the heyday of hi fi and received great reviews at the time. They are in excellent condition with no marks apart from a small ding in the top corner of one (shown in the photos), and one of the screw masks is missing but is purely cosmetic. The foam speaker surrounds have been replaced to bring the speakers up to perfect condition. Im listing these with a low reserve, as I need to make space for some new purchases. They will make a great addition to either vintage or modern systems. They are heavy and solid, so collection only is preferred, as I dont have the original packaging.

For sale is a vintage, mint condition Hewlett Packard Advanced Scientific Calculator bundle. You will receive the following: -HP 28S Calculator-4 Brand new LR1 Batteries (calculator takes 3 - batteries used only for testing)-Owners Manual-Reference Manual See pictures for condition details. The calculator is an absolutely mint condition and does not show anywhere whatsoever. The manuals do have some cover where and a couple of creased pages however there are no marks or writings inside the manuals. -------------------------------------------------------------------------------Free standard shipping via USPS Parcel Select, UPS Ground or Fedex Ground to the continental US. Thank you for looking at our item. Purchase with confidence as I have 100% positive feedback and always deliver items to the shipping carrier within 24 business hours. I proudly repurpose boxes and packaging materials.

Manual is in good condition with very little signs of wear. MANUAL ONLY, No Calculator. This is a reference manual for the HP-28S, a vintage advanced scientific calculator made by Hewlett Packard in the United States. The manual is specific to this model and provides comprehensive information on its usage and features. The HP-28S reference manual is a valuable tool for anyone interested in vintage electronics or scientific calculators. It includes detailed information on the calculator's functions, programming capabilities, and other important aspects. This manual is a must-have for collectors, enthusiasts, and anyone looking to learn more about this unique piece of technology.

Please view all photos. Item condition may differ in judgement. What is photographed is the item for sale. Items are kept and stored in a pet free, smoke free environment. Any significant damage or issues will be photographed and noted. SHIPPING: All items are packed with care. Most purchases will be shipped within 1 business day. To combine shipping on multiple purchases, add items to cart. If this does not work, please reach out. All sales include tracking number as soon as item is packed.

ar speaker grommetts for ars 28s speakers/lot of five/vg cond/may fit others.

Vintage 1986 Hewlett Packard HP 28S Advanced Scientific Calculator Tested Works. In excellent condition with minor wear - See photos.

Hewlett-Packard HP 28S Advanced Scientific Calculator USA for parts don’t know what’s wrong thanks

Turns on and buttons are working - has a bit of a smell from sitting in a basement for years

Please view all photos. Item condition may differ in judgement. What is photographed is the item for sale. Items are kept and stored in a pet free, smoke free environment. Any significant damage or issues will be photographed and noted. SHIPPING: All items are packed with care. Most purchases will be shipped within 1 business day. To combine shipping on multiple purchases, add items to cart. If this does not work, please reach out. All sales include tracking number as soon as item is packed.

Vintage 1986 Hewlett Packard HP 28 S Advanced Scientific Calculator with Original Manuals. We could not get the calculator to turn on with new batteries. Display went on briefly then off. We are selling this for parts and manuals. If you can get to work, great, but we are not selling as a working calculator. Please see the pictures since they are part of the description and show the condition of the item. Hewlett-Packard Advanced Scientific Calculator HP-28S & Manuals Parts (?) Click image to enlarge Description Vintage 1986 Hewlett Packard HP 28 S Advanced Scientific Calculator with Original Manuals. We could not get the calculator to turn on with new batteries. Display went on briefly then off. We are selling this for parts and manuals. If you can get to work, great, but we are not selling as a working calculator. Please see the pictures since they are part of the description and show the condition of the item. Payment WE ACCEPT PAYPAL PAYMENTS ONLY Shipping WEATHER PERMITTING WE SHIP MONDAYS, WEDNESDAYS & FRIDAYS PLEASE NOTE: WE WILL DO EVERYTHING POSSIBLE TO SHIP OUT YOUR PACKAGE ASAP, HOWEVER, WE LIVE IN AN AREA WHERE SOMETIMES IT IS NOT POSSIBLE DUE TO WEATHER CONDITIONS. WE WILL CONTACT YOU SHOULD THERE BE AN ISSUE. THANK YOU FOR YOUR UNDERSTANDING. COMBINED SHIPPING Attention Winning Bidders IF YOU WON AN ITEM AND ARE STILL BIDDING OR PLANNING ON BIDDING ON A LISTED LIVE AUCTION(S), LET ME KNOW IMMEDIATELY SO I WONT INVOICE YOU. MULTIPLE/COMBINED SHIPPING COSTS IF YOU WIN MULTIPLE ITEMS, PLEASE LET US INVOICE YOU PRIOR TO PAYING. WE ARE THEN ABLE TO SEND ONE INVOICE THAT WILL INCLUDE THE COST OF SHIPPING/HANDLING FOR ALL THE ITEMS. WE ALWAYS LOOK FOR THE LEAST EXPENSIVE WAY TO SHIP ITEMS SAFELY WITH TRACKING, BUT IF ITEM(S) ARE OVERSIZED OR HEAVY, SHIPPING CAN COST MORE WHEN COMBINED. PLEASE NOTE: IF YOU WIN MULTIPLE ITEMS, WE WILL DO OUR BEST TO COMBINE SHIPPING. HOWEVER, IF ITEM(S) ARE OVERSIZED, OVERWEIGHT, FRAGILE, OR CAN NOT BE SHIPPED TOGETHER, YOU WILL NEED TO PAY FOR THE SHIPPING PRICE STATED IN THAT ITEMS AUCTION. ATTENTION INTERNATIONAL BUYERS We are not able to mark the item as gifts, or write the value of the items lower than they are on the shipping labels/invoices due to the custom declaration laws. Import duties, taxes, and other additional fees might be charged by your local customs. It is the buyer responsibility to pay all of the taxes and any other fees. If you have any questions about import duties or taxes, please contact the customs office in your country before you purchase or make an offer. DUE TO CERTAIN US & INTERNATIONAL LAWS, SOME ITEMS WILL NOT BE SHIPPED OUT OF THE UNITED STATES, SO PLEASE CHECK AUCTION SHIPPING PRIOR TO BIDDING. We are not responsible for any delays due to the buyers countrys customs policies. Terms of Sale All Sales Final with the Following Exceptions: 1) Item(s) Arrives Broken or Damaged (I will need pictures of packaging and damaged item prior to shipping back) 2) Item(s) are not as described or pictured in the Auction You must contact me for a refund within 72 hrs of delivery with the reason you are wanting a refund. All Items must be shipped back to me even if damaged before a refund will be given. Refunds are given on items only and not shipping or handling. Buyer must send item back priority with tracking number. PLEASE CONTACT ME SHOULD ANY OF THE ABOVE PROBLEMS OCCUR. THANK YOU About Us Track Page Views WithAuctivas Counter

Hewlett Packard, HP 28S Advanced Scientific Calculator. Works good. New batteries and original case included.

Battery door for hewlett packard HP 28S calculator Also work with HP19BHP19BIIHP28CHP18C

Maths manualsl for Hewlett Packard HP 28S Calculator CalculusMathematical applicationsVector and Matrices Algebra and college math