Yes, that was reportedly the last 16-wheel long-haul PRR tender in existence - needs a bit of refurbing and streamlining to match up to # 5550 T1, but apparently a far lesser expense than building a new long-haul tender from scratch. According to the T1 Trust website:
The T1 Trust has purchased the 200,000-pound PRR long haul tender #6659 from the Western New York Railway Historical Society (WNYRHS) that had been used behind an M1 locomotive. Essentially a T1 tender minus the streamlining, this acquisition negates the need to build a new tender for the T1 locomotive. Design, construction, and fabrication of a new tender was estimated at $3 million out of the project's total $10 million budget.
The tender holds 31 tons of coal and 18,000 gallons of water. The tank is the last of its kind - no other Coast-to-Coast tenders with 16-wheels are known to exist. The tender is in excellent condition with sealed hatches, minor surface rust, and well-preserved trucks, thanks to the tender's low side walls that sheltered the trucks and bearings from weather. Jason Johnson, the T1 Trust's General Manager remarked after having visited the tender for a thorough inspection, "I just can't get over what great shape it's in".
The long haul tender was originally acquired by the WNYRHS to replace the gutted-out short tender for their PRR 2-10-0 I1sa locomotive. As part of the purchase agreement, the T1 Trust has agreed to fully restore the I1's tender tank to its original specifications as part of the WNYRHS's planned cosmetic restoration of the I1 locomotive. The cost of the I1's tender restoration is estimated to be approximately $75,000.
The T1 Trust has also made arrangements to store the tender at the WNYRHS's museum site, the Heritage Discovery Center, in Buffalo, NY for up to 30 years at a cost of $1 per year where it will be displayed alongside the PRR I1. WNYRHS President, Joseph Kocsis, Jr. expressed much enthusiasm for the agreement, "We're grateful to partner with the T1 Trust to make 5550 a reality. They bring a great deal of expertise to the table and we look forward to working with them in the restoration of our I1 tender and seeing the long haul tender return to its intended use".
T1 Trust members will travel to New York to complete a renovation of the brake system and replace the oil in the roller bearings. In addition, the Trust plans to sandblast, prime and paint the tender in the appropriate Brunswick green paint scheme. The overall cost of the tender preservation effort is at least $45,000. About half of the work will be donated, and the T1 Trust is seeking donations to cover the remaining cost.
Please take a moment to help preserve the tender for 5550. To learn more, please visit the T1 Trust’s Fundraising Center and make a tax-deductible contribution today. All donors who direct $500 or more to the 5550 Tender Preservation Fund will have their name engraved on a plaque which will be affixed to the tender.
You can follow the progress of the resurrection of the T1 here:
https://prrt1steamlocomotivetrust.org/news.php